With this screwdriver kit， you do not have to go to a mechanician any more. You can repaire your remote control helicopter， plane， car and other appliances by yourselfDescription:Length(approx): 108mm / 4-1/4inch for eachColor: Black Material: Aluminum handle with steel shaftPackage Includes:1 x 1.5mm Hex Key1 x 2.0mm Hex Key1 x 2.5mm Hex Key1 x 4.0mm Box Spanner1 x 5.5mm Box Spanner1 x 3.0mm Phillips Screwdriver1 x 3.0mm Slotted Screwdriver