Description: Materials: Steel Length 17.2cm/ 6.77 inch 4 kinds of tip size: 1.5mm, 2.0mm, 2.5mm, 3.0mm.Easy to change the tip for use. Suitable for different kinds of RC helicopters, airplanes, cars, boats, etc. An essential pick-up for the RC enthusiast. Package Includes: 4 Pieces RC Car Screwdrivers