Heat treated alloy tool steel, one inch base fits wrench or bench vise. Thin wall construction allows use without removal of cones and locknuts. The FR-5.2 has 12 splines that are approximately 23.4mm across.

• Fits Shimano, SRAM (including 1x), SunRace, SunTour, Chris King and other cassette lockrings
• Also fits some Shimano disc brake lockrings
• Center bore for axle clearance is 12mm
• Base size for socket or wrench is 1" or 25.4 mm
• Always use a quick release skewer to hold the tool in place and snug to cogs when loosening
• For solid axles, use the axle nut