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Material: aluminium alloy crank and chainring, lightweight, stylish, eye-catching styling, high axial strength and compatibility Crank: 104/64 mm. Crank suitable for single/double/triple chainring, crank arm length 170mm, crank hole distance 74m, fits 8-12S chains single/double/triple speed chainring Chainring: Snail single speed chainring with narrow wide teeth, 104BCD, 32/34/36/38T, round, black/red, chain ring thickness 4 mm (narrow teeth: 1.9 mm, width teeth: 3.7 mm), weight: approx. 45g 【Application】Squre tapered BB, pedal size: 9/16 inch, fit for mountain bike, road bike crankset, etc. Package: 1 x MTB crankset, 1 x mountain bike single speed chain ring, 4 x chainring screws. › See more product details