Specification: High quality: the shaft is made of high-speed steel.Ergonomically and slip-resistant designed handle for comfortable grip.Compact and lightweight design.4 different sizes are included to meet all your needs.Elegant appearance.Especially suitable for RC helicopter airplane. Package include:1.5mm Hex Key2.0mm Hex Key2.5mm Hex Key3.0mm Hex Key Size: 1.5MM 2.0MM 2.5MM 3.0MMDiameter of handle: 17mmTotal length: 190mmLength of handle: 100mmType: Hex Screw driver ToolsMade of HSSUsed for disassamble Hex Screw in helicoptor and other placeColor:BlackMaterial:Titanium steelis_customized: YesBrand Name: ST ModelSize: 1.5mm 2.0mm 2.5mm 3.0mmScrew Head Type: HexType: Screwdriver SetModel Number: toolColor: BlackQuality: goodSize: 1.5mm 2.0mm 2.5mm 3.0mmRadio Control Style: RC ModelMaterial: Titanium steelScale: NonePlace of Origin: Guangdong China (Mainland)Unit Type: setPackage Weight: 0.200kg (0.44lb.)Package Size: 24cm x 12cm x 5cm (9.45in x 4.72in x 1.97in) package list :1 set x RC tools Kit