Klein hex-keys are the tools professionals cannot afford to be without. Heat-treated and tempered for superior strength and durability, Klein hex-keys are designed for a precise fit in sockets, preventing slippage and stripping of the socket.Features Short side for higher torque situations and low clearances Ball end works on angles up to 25-degrees Long side for accessing hard-to-reach places Hex Key that allows easy access, even in restricted or hard-to-reach areas Warnings Always wear approved eye protection. Do NOT use a pipe or similar extension to increase leverage. NOT insulated. Will NOT protect against electrical shock. Hex Size: 3 mm Long Arm Length: 4 in (10.2 cm) Short Arm Length: 0.875 in (2.2 cm) Weight: 0.0200 lbs (0.32 oz / 9.1 g) Width: 0.75 in Depth: 3.625 in Height: 0.125 in Size Name: 3 mm Country of Origin: United States Style Name: Metric Working Angle: 25 degrees DownloadsVideo DownloadSpec Sheet