Ball End Hex Key Shape L Metric Tip Size 17mm Arm Length 9-43/64 In. Handle Length 2-27/64 In. Blade Material Alloy Steel Finish Black Oxide Standard Tool(Accessory Needed for Tethering) Working Angle Up To 35 Degrees Meets/Exceeds ANSI B18.3 Federal Specification GGG-K-275D