HP Tools are designed with the powersports enthusiast in mind to be used on dirt bikes, street bikes, ATVs or anything in need of a good tool. The goal is to build high quality products without the high price tag by cutting out the middle-man markups. Each HP Tools product is quality and durability tested so that you have the confidence to get the job done right every time. This tool is needed for disassembly and assembly on KYB, Showa and WP Twin / Dual Chamber forks. Holds back the spring force allowing you to remove or install the bottom nut on twin / dual chamber forks or the cap on cartridge type forks.