• Fits Shimano, SRAM, SunRace, SunTour, Chris King and other cassette lockrings.
• Fits the SRAM XX1, X01, and X1, 7-12 Speed
• Also fits Shimano standard Centerlock disc brake lockrings.
• Use a quick release skewer to hold the tool in place and snug to cogs when loosening. For solid axles, use the axle nut.

1-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