Product Description Tool by SRAM for thread-mount chainrings on XX or XX SL power meters You need this chainring tool from SRAM if you want to remove chainrings with thread mount from your XX or XX SL Eagle Transmission Powermeter crank. However, you do not need this tool for cranks with an axle-based power measurement that are combined with Direct Mount chainrings. Specifications:Function:Chainring removalTool Type:special toolTechnical Information:Material:metalCompatibility:Thread-Mount chainringsXX / XX SL Eagle Transmission Power Meter crankContents:1 x SRAM chainring tool1 x pin Manufacturer: SRAM LLC 1000 W. Fulton Market 4th Floor Chicago IL 60607 USA info@sram.com Distributor: SRAM Europe Sales and Services B.V. Paasbosweg 16 3862 ZS Nijkerk Netherlands info@sram.com