PRO QUALITY CHAIN WHIP & PEDAL WRENCH: A DREAM TOOL! 2 in 1 professional toolset of chain whip on one head, another head with two 15mm openings pedal wrench! It is perfectly designed for installing and removing cassettes off the hub body, as well as mounting and disassembling pedals from cranks without scratching the crank arms. The chain whip tool is compatible with all Shimano, SRAM, HG System 7 12 speed cassettes. NOTE: This is NOT COMPATIBLE WITH screw-on type freewheel and Sram XD system. VERSATILE LOCKRING TOOL: The lockring tool comes with a detachable 12mm magnetic guide pin (12mm thru-axle adapter), keeping the cassette from rotating while removing and installing the lockrings from thru-axle hubs, and its heat-treated steel base can be used in conjunction with a socket or wrench. Compatible with Shimano HG, Sram, and other 24mm diameters cassettes. This tool suits both quick release and 12mm thru-axle hubs.