Cassette lockrings are one part of your bike that requires you to use a specialized tool if you plan on installing or removing a cassette. Abbey Bike Tools updates the ever popular Dual Sided Crombie Tool improving its use on thru-axle equipped bikes.This tool combines both the Shimano/SRAM standard lockring tool on one side with a larger piloting pin to fit in 12mm thru-axles. The other end is the same Shimano/SRAM fitment, sans pilot pin, and has a hole deep enough to bypass most quick-release skewer nuts. A long handle provides ample leverage while removing stubborn lock rings and the tool's long splines provide plenty of purchase on soft, aluminum lock rings.The Abbey Bike Works Dual Sided Crombie Tool is constructed from stainless steel and is only compatible with Shimano and SRAM cassettes and rotor lockrings. Please note that this tool isn't Campagnolo compatible like the standard, non-thru-axle Crombie.