Color: black Material: aluminum alloy Package Size: 10.2×8×2.8in Package Includes: 1×left and right crank, 1×32T crankset, 4×set of M8 bolts Note: - Please refer to the measurement. Tiny measuring error is allowable in normal range. - There might be a little color difference due to the monitor, camera or other factors, please refer to the physical item. 【Durable Aluminum Alloy Material】Made of high strength aluminum alloy material, the cranks are sturdy and durable without easy deformation and breakage, working well to withstand harsh outdoor environments. With matte anodic oxidation process, they feature better resistance to corrosion and wear, effectively serving you for a long time. 【Stable and Wearproof 32T Chainring】Adopting narrow wide teeth design, the 32T chainring can keep the chain stable and prevent it from falling even when you are riding on the bumpy roads, giving you better riding experience. It is made of quality aluminum alloy material with CNC integrated processing, strong and wearproof, ensuring long service life. 【Convenient Multi-Speed Support】The crank measures 170mm/6.7" in arm length, 45mm/1.8" in chain line, 104mm/4.1" in outer circle diameter, and 64mm/2.5" in inner circle. With triple-chainring crankset design, it is easy to modify 1x speed crankset, 2x speed crankset, and 3x speed crankset, meeting your diverse needs. 【Practical Square Taper Crankset】The crank interior adopts a weight-reducing design for more comfortable riding. With smooth surface, it is easy to clean and maintain. Our crankset is designed with a square taper hole and a 9/16" (14mm) hole for pedal. Warm tips: Please make sure your bike bottom bracket is squared taper type and check your pedal size before use. 【Wide Application】With reliable material and meticulous workmanship, the square taper crankset is widely suitable for mountain bikes, road bikes, fat tire bikes, etc. Its classic black look can nicely match with your bike, making your bike more fashionable and beautiful.