{"id":10140403335483,"title":"Replacement Spools for the Petzl Simple Descender","handle":"replacement-spools-for-the-petzl-simple-descender","description":"\u003cp\u003e\u003cstrong\u003eStainless steel\u003c\/strong\u003e replacement spools\/pulleys for the venerable \u003ca href=\"https:\/\/hownot2.com\/products\/simple?_pos=1\u0026amp;_psq=Simple\u0026amp;_ss=e\u0026amp;_v=1.0\"\u003ePetzl Simple descender\u003c\/a\u003e. Made of 316 stainless steel, these replacement spools last 6-10x as long as the stock 6061 Aluminum spools. They offer reduced friction and a much smoother ride. We recommend replacing only the bottom spool, which sees the most wear—replacing both is unnecessary. The reduced friction of these spools is really what makes them worth the extra cost—they are quite smooth and easy to control with less of the ‘grabbiness’ of the aluminum versions. This is especially helpful for lighter weight cavers who struggle with the Simple on long pitches or fat\/muddy ropes.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e7075 Aluminum \u003c\/strong\u003ereplacement spools\/pulleys for the venerable \u003ca href=\"https:\/\/hownot2.com\/products\/simple?_pos=1\u0026amp;_psq=Simple\u0026amp;_ss=e\u0026amp;_v=1.0\"\u003ePetzl Simple descender\u003c\/a\u003e. These spools replace the upper or lower position spools on newer Simples that use symmetrical single hole spools. Made of 7075 aluminum, these replacement spools last about 2x as long as the stock 6061 Aluminum spools. They offer similar friction characteristics to the stock Petzl spools. These make a great upper position spool to pair with our 316 stainless steel spools. You can, of course, run these spools in both positions to maintain the light weight of the Simple and\/or to preserve the original friction characteristics.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cmeta charset=\"utf-8\"\u003e It is, of course, your responsibility to familiarize yourself with them (and any other changes to your vertical setup) in a controlled setting prior to real world use. All spools are tested for fit and function prior to shipping, please excuse any resulting minor cosmetic imperfections that may result.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e","published_at":"2025-07-29T07:57:28-07:00","created_at":"2025-07-25T09:52:06-07:00","vendor":"Underground Manufacturing","type":"Caving Accessory","tags":["Caving","Caving Descenders","Sport","Underground Manufacturing"],"price":3500,"price_min":3500,"price_max":5000,"available":true,"price_varies":true,"compare_at_price":null,"compare_at_price_min":0,"compare_at_price_max":0,"compare_at_price_varies":false,"variants":[{"id":50460109406523,"title":"316 Stainless Steel","option1":"316 Stainless Steel","option2":null,"option3":null,"sku":"PBR-523-01~1-Hole 316 Stainless Simple Spool","requires_shipping":true,"taxable":true,"featured_image":null,"available":true,"name":"Replacement Spools for the Petzl Simple Descender - 316 Stainless Steel","public_title":"316 Stainless Steel","options":["316 Stainless Steel"],"price":5000,"weight":155,"compare_at_price":null,"inventory_management":"shopify","barcode":"5423765489","requires_selling_plan":false,"selling_plan_allocations":[],"quantity_rule":{"min":1,"max":null,"increment":1}},{"id":50460109439291,"title":"7075 Aluminum","option1":"7075 Aluminum","option2":null,"option3":null,"sku":"PBR-523-04~1-Hole 7075 Aluminum Simple Spool","requires_shipping":true,"taxable":true,"featured_image":null,"available":true,"name":"Replacement Spools for the Petzl Simple Descender - 7075 Aluminum","public_title":"7075 Aluminum","options":["7075 Aluminum"],"price":3500,"weight":55,"compare_at_price":null,"inventory_management":"shopify","barcode":"4578290084","requires_selling_plan":false,"selling_plan_allocations":[],"quantity_rule":{"min":1,"max":null,"increment":1}}],"images":["\/\/hownot2.com\/cdn\/shop\/files\/Aluminumwheel_bc2fb3b6-5dbd-46e9-bd8e-263ee2f10cc9.webp?v=1754606479","\/\/hownot2.com\/cdn\/shop\/files\/Stainlesswheel_1482b15b-f72b-437c-98ae-c53f38d1a7bc.webp?v=1754606479","\/\/hownot2.com\/cdn\/shop\/files\/stainlesswheelback_b5123e1d-9e4f-49bb-93b0-d54aa3b9c216.webp?v=1754606479","\/\/hownot2.com\/cdn\/shop\/files\/wheelback_f1693104-43f3-4113-ab2f-cff455d234fb.webp?v=1754606479"],"featured_image":"\/\/hownot2.com\/cdn\/shop\/files\/Aluminumwheel_bc2fb3b6-5dbd-46e9-bd8e-263ee2f10cc9.webp?v=1754606479","options":["Material"],"media":[{"alt":"#material_7075 Aluminum","id":44914623643963,"position":1,"preview_image":{"aspect_ratio":1.0,"height":2000,"width":2000,"src":"\/\/hownot2.com\/cdn\/shop\/files\/Aluminumwheel_bc2fb3b6-5dbd-46e9-bd8e-263ee2f10cc9.webp?v=1754606479"},"aspect_ratio":1.0,"height":2000,"media_type":"image","src":"\/\/hownot2.com\/cdn\/shop\/files\/Aluminumwheel_bc2fb3b6-5dbd-46e9-bd8e-263ee2f10cc9.webp?v=1754606479","width":2000},{"alt":"#material_316 Stainless Steel","id":44914623676731,"position":2,"preview_image":{"aspect_ratio":1.0,"height":2000,"width":2000,"src":"\/\/hownot2.com\/cdn\/shop\/files\/Stainlesswheel_1482b15b-f72b-437c-98ae-c53f38d1a7bc.webp?v=1754606479"},"aspect_ratio":1.0,"height":2000,"media_type":"image","src":"\/\/hownot2.com\/cdn\/shop\/files\/Stainlesswheel_1482b15b-f72b-437c-98ae-c53f38d1a7bc.webp?v=1754606479","width":2000},{"alt":"#material_316 Stainless Steel","id":44914623611195,"position":3,"preview_image":{"aspect_ratio":1.0,"height":2000,"width":2000,"src":"\/\/hownot2.com\/cdn\/shop\/files\/stainlesswheelback_b5123e1d-9e4f-49bb-93b0-d54aa3b9c216.webp?v=1754606479"},"aspect_ratio":1.0,"height":2000,"media_type":"image","src":"\/\/hownot2.com\/cdn\/shop\/files\/stainlesswheelback_b5123e1d-9e4f-49bb-93b0-d54aa3b9c216.webp?v=1754606479","width":2000},{"alt":"#material_7075 Aluminum","id":44914623709499,"position":4,"preview_image":{"aspect_ratio":1.0,"height":2000,"width":2000,"src":"\/\/hownot2.com\/cdn\/shop\/files\/wheelback_f1693104-43f3-4113-ab2f-cff455d234fb.webp?v=1754606479"},"aspect_ratio":1.0,"height":2000,"media_type":"image","src":"\/\/hownot2.com\/cdn\/shop\/files\/wheelback_f1693104-43f3-4113-ab2f-cff455d234fb.webp?v=1754606479","width":2000},{"alt":null,"id":45403741552955,"position":5,"preview_image":{"aspect_ratio":0.563,"height":1920,"width":1080,"src":"\/\/hownot2.com\/cdn\/shop\/files\/preview_images\/ce77e48742484915b3d71123e649ad76.thumbnail.0000000000.jpg?v=1756503705"},"aspect_ratio":0.563,"duration":34000,"media_type":"video","sources":[{"format":"mp4","height":480,"mime_type":"video\/mp4","url":"\/\/hownot2.com\/cdn\/shop\/videos\/c\/vp\/ce77e48742484915b3d71123e649ad76\/ce77e48742484915b3d71123e649ad76.SD-480p-1.5Mbps-56462190.mp4?v=0","width":270},{"format":"mp4","height":1080,"mime_type":"video\/mp4","url":"\/\/hownot2.com\/cdn\/shop\/videos\/c\/vp\/ce77e48742484915b3d71123e649ad76\/ce77e48742484915b3d71123e649ad76.HD-1080p-7.2Mbps-56462190.mp4?v=0","width":606},{"format":"mp4","height":720,"mime_type":"video\/mp4","url":"\/\/hownot2.com\/cdn\/shop\/videos\/c\/vp\/ce77e48742484915b3d71123e649ad76\/ce77e48742484915b3d71123e649ad76.HD-720p-4.5Mbps-56462190.mp4?v=0","width":404},{"format":"m3u8","height":1080,"mime_type":"application\/x-mpegURL","url":"\/\/hownot2.com\/cdn\/shop\/videos\/c\/vp\/ce77e48742484915b3d71123e649ad76\/ce77e48742484915b3d71123e649ad76.m3u8?v=0","width":606}]}],"requires_selling_plan":false,"selling_plan_groups":[],"content":"\u003cp\u003e\u003cstrong\u003eStainless steel\u003c\/strong\u003e replacement spools\/pulleys for the venerable \u003ca href=\"https:\/\/hownot2.com\/products\/simple?_pos=1\u0026amp;_psq=Simple\u0026amp;_ss=e\u0026amp;_v=1.0\"\u003ePetzl Simple descender\u003c\/a\u003e. Made of 316 stainless steel, these replacement spools last 6-10x as long as the stock 6061 Aluminum spools. They offer reduced friction and a much smoother ride. We recommend replacing only the bottom spool, which sees the most wear—replacing both is unnecessary. The reduced friction of these spools is really what makes them worth the extra cost—they are quite smooth and easy to control with less of the ‘grabbiness’ of the aluminum versions. This is especially helpful for lighter weight cavers who struggle with the Simple on long pitches or fat\/muddy ropes.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e7075 Aluminum \u003c\/strong\u003ereplacement spools\/pulleys for the venerable \u003ca href=\"https:\/\/hownot2.com\/products\/simple?_pos=1\u0026amp;_psq=Simple\u0026amp;_ss=e\u0026amp;_v=1.0\"\u003ePetzl Simple descender\u003c\/a\u003e. These spools replace the upper or lower position spools on newer Simples that use symmetrical single hole spools. Made of 7075 aluminum, these replacement spools last about 2x as long as the stock 6061 Aluminum spools. They offer similar friction characteristics to the stock Petzl spools. These make a great upper position spool to pair with our 316 stainless steel spools. You can, of course, run these spools in both positions to maintain the light weight of the Simple and\/or to preserve the original friction characteristics.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cmeta charset=\"utf-8\"\u003e It is, of course, your responsibility to familiarize yourself with them (and any other changes to your vertical setup) in a controlled setting prior to real world use. All spools are tested for fit and function prior to shipping, please excuse any resulting minor cosmetic imperfections that may result.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e"}