Features:Made of premium aluminium alloy, lightweight, high strength and deformation resistance, durable for long time use.Fine polish and great paint, colorfast and stylish.Standard precision cutting of hole, which ensures perfect fit to bike, easy to install.170mm crank arm length without any overlap of crank arm and chain ring bolt.A nice replacement for bike repair, compatible with many bike models.Specification:Material: Aluminium AlloyOptions: Black-Square Hole; Black-Rhombic Hole; Silver-Square Hole; Silver-Rhombic HoleTotal Length:Approx. 20.5cm / 8.07inHole Distance: 170mmFit for: Left sideWeight: Approx. 200-214gNote: Pay attention to the shape of the inner hole of the crank. The hole in the middle of some cranks is diamond-shaped, and the hole in the middle of some cranks is square. Before purchasing, you need to confirm the inner shape of the original handle.Package Included: 1 x Crank Arm.