5 and 7mm keys aren't commonly found in the bicycle industry

The TRSr SL Guide is engineered to take extreme punishment dealt by riders on enduro bikes

Extremely stable shoulder blocks for outstanding cornering grip

Audio notification when reaching preset torque

Chainring Material: Steel

SuperB Cassette Lockring Tool With 12mm Guide Pin Envelope Shipping 5 and 7mm keys aren'tSuper B Shimano SRAM Freewheel and Cassette Remover 12mm Tool. Features a 12 mm guide pin to remove install cassette lockrings from thru axle hubs stably. Use with TB 8830 universal wrench or 24 mm open wrench Who's this item for: For home mechanics and riders wanting to disassemble freewheels and cassettes Compatibility: Shimano, SRAM, Sun Race, Sun Tour, Chris King and other cassette lockrings with 12mm diameter thru axle hub