Description: Not easy to rust,useful and practical. It is constructed from carbon steel for durability. Non-slip plastic handle for comfort and ease of use. This combination chain whip and wrench is in high quality. Suitable for mountain bike,bicycle,road bike,and so on. Specification: Material: 45# Carbon Steel Size: Approx.28 x 4cm / 11.02 x 1.57inch Package Includes: 1 Piece Bike Freewheel Wrench