Tamper Resistant Torx Key Shape L Tip Size T9 Arm Length 3-13/64 In. Handle Length 19/32 In. Blade Material Heat Treated 8650 Chrome Nickel Alloy Hex Steel Finish Black Oxide Standard Tool(Accessory Needed for Tethering) Meets/Exceeds ANSI B18.3 Federal Specification GGG-K-275D