It works fine, shiftings fine, looks good on the bike.This variable speed mountain bike crankset is suitable for road bike, variable speed mountain bike. Feature: 1.?SIMPLE TO OPERATE?Bicycle high carbon steel crankset, good quality, easy to install and simple to operate. No problems with installation. 2. ?WITH CHAINS COVER?This bike tooth plate crank set is for 24 34 42T with chains cover, high performance. Perfect gear range for your intended purpose. 3. ?NOT EASY TO DEFORM?High carbon steel crank and high carbon steel crankset , high strength, not easy to deform. High quality for durable and long lasting use. 4.?BETTER CHAIN AND GEAR MESHING? This road bicycle crankset with fine workmanship, better chain and gear meshing, provide good usage experience. 5. ?WORKS FINE, shiftingS FINE? It works fine, shiftings fine, looks good on the bike.This variable speed mountain bike crankset is suitable for road bike, variable speed mountain bike. Specification: Condition: 100% Brand New Item Type: Bike Crankset and Crank Material: metal Color: black Product Size: Approx. 27.5x18x5cm/10.8x7.1x2in Weight: Approx. 1100g Number of teeth: 24/34/42 Crank length: 170MM/6.7in wide legs Suitable for bottom bracket length 68x118MM 120MM/2.7x4.6in 4.7in (square hole) Suitable for 21/24/27 speed mountain bike Package List: 1 x High carbon steel crank 1 x High carbon steel crankset