Features: Make of Metal and Plastic materials, rusts resistant, strong and Enduring. The Nipple Driver is a necessary tool for winding up spoke nipples during wheel building, bicycles wheel spokes Driver helping you build tensioned wheel efficiently. The bike spoke tool is your necessary tool for bike rims alignment when tightening, removing, and installing bike spokes. Simple, bicycles spoke wrench tool is easy to use, easy to operate. Very small and light weight, so bicycles spoke tool can easily be carried around or on a bike. Specifications: Materials: Metal and Plastic Handle length: about 120mm/4.72inch Screwdriver length: about 80mm/3.15inch Package Includes: 1set Nipple Screwdriver Tool note: Please allow 1-2cm errors due to manual measurement, make surely that you not mind before order. Due to difference between different monitors, the picture may not reflect the actual color.