This bike freewheel chain whip is of high quality and priced reasonable. It has a long service life for the durable chain it constructed. Easy and comfortable to operate. Fits all freewheels and cassettes, including 10-speed Material: 45# Carbon Steel Surface finish: chrome plated Length: 29 cm Feature: suitable for 8, 9 and 10 speed cassettes. When remove the flywheel, it can fix the wheel to prevent from damage.