Detail 4 pcs. Hexagon Wrench with Screwdriver Nuts for RC Helicopter FPV Drone for extra durability, corrosion resistance and anti-corrosion. Hex Nut Driver Kit is used to assemble or disassemble RC helicopters, airplanes, cars, boatsEach wrench has a coded aluminum handle and a replaceable bit, the aluminum handle easily stores nails, screws, nuts, preventing small items from being lost or dropped. The size of the key is engraved on each handle for easy identification. Simple and practical design, convenient to grip and easy to use. Size: 4.0BOX/5.5BOX/7.0BOX/8.0BOX Screw/1.5/2.0/2.5/3.0mm ScrewMaterial: MetalColor: Black+GoldPackage Contents:4 x ScrewOnly the above package content, other products are not included. Note: Light shooting and different displays may cause the color of the item in the picture a little different from the real thing. The measurement error is +/- 1-3cm.