The item is a set of 4pcs simple and practical hexagonal screw drivers in different sizes, which are mainly made of durable hard metal material, and can be used to easily disassemble screws in RC helicopter or other places. With comfortable-to-grip handle and easy to use, it is really a wonderful screwdrivers kit for choice. Features - ColorAssorted Color - Material: . - Size: 18x1.8x1.8cm - 4pcs different head sizes: 1.5mm, 2.0mm, 2.5mm, 3.0mm. - and Metal Hexagonal Screw Driver Screwdrivers Tools 1.5mm 2.0mm 2.5mm 3.0mm. - for easily disassembling screws in RC helicopter or other places. - Simple and practical design, comfortable to grip and easy to use. - for your model airplane. Package list: 4 x screwdrivers