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 has 12 splines that are approximately 23.4mm across.

- Fits Shimano, SRAM, Sunrace, Suntour, Chris King and other cassette lockrings
- Fits the SRAM XX1 11-speed cassettes
- Also fits Shimano disc brake lockrings
- 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