Description: Materials: Steel Length 12.8cm/ 5.04 inch 4 kinds of size: 1.5mm, 2.0mm, 2.5mm, 3.0mm. Lightweight, strong, durable and easy to carry. An essential pick-up for the RC enthusiast. Works for screws on drone wheel block, rudder angle adjuster, landing gear, shock absorber assembly, propeller protector. Package Includes: 4 Pieces Hexagonal Screwdriver(1.5/2.0/2.5/3.0mm)