Premium Quality: The Oumers professional bike crank kit is made of high-quality forged steel and coated with a sturdy plastic handle that repairs and hard plastic bracket cap, maintains your bike crank arm and flywheel, helping you save a lot of time and money.
Chain Whip Bike Tool: The chain whip part is caters for 7, 8, 9, 10 speed cassettes.The B.B. cup wrench part has an outer diameter of 44mm and 16 teeth to install or remove a bicycle bottom bracket.The tail hook part removes the bicycle bottom bracket lock ring and flywheel lock ring,2,3,4 grooves lock ring
Cassette Lockring Tool: The bicycle cassette ring locking tool is used to install and remove a bicycle CS cassette, used with a chain wrench and a multifunctional 16mm bike wrench. Cassette removers can also be used to tighten screw on the flywheels.
Plastic Bracket Cap: The plastic bracket cap is perfectly compatible with Hollowtech II, not with BBR60 Ultegra.
Note: The bicycle cassette ring locking tool is only available for the cassette flywheel CF flywheel, not the rotary flywheel MF flywheel. The right use of bicycle tools can help you reduce the time and effort spent repairing and maintaining your bike.