4pcs Metal 4.0/5.5/7.0/8.0mm Hex Screwdriver Tools NUT Key Socket Screwdriver Wrench Set

Description:  Used for helicopters, airplanes, cars, boats, particularly 450 Helicopters/ESKY CP V2 King 3.     Specifications:  Material: Aluminum alloy + Steel;  Color: Black + silver;  Length of cutting head: 8.5cm / 3.3in;  Length of handle: 9cm / 3.5in;  Total length: 17.5cm / 6.9in;  Package size: 21 x 9.3 x 2cm / 8.3 x 3.7 x 0.8in;  Package weight: 201g / 7.1oz.     Package includes:  1 x 4.0mm Hex key Socket Screw Driver Wrench;  1 x 5.5mm Hex key Socket Screw Driver Wrench;  1 x 7.0mm Hex key Socket Screw Driver Wrench;  1 x 8.0mm Hex key Socket Screw Driver Wrench.