Armstrong 21-256 Deep Length Socket

Armstrong Socket, Deep Length, Series, Yes Impact Rated, Measurement System, Square Drive, Drive Size, in 3/4, Socket Size, in 1-3/4, 3-5/8 Overall Length, Opening Depth in, in 1-3/8, 1-7/8 Drive End Width, Socket End Width in, in 2-1/2, Number of Points, Bolt Clearance Depth, in 1.56, High Alloy Steel, Finish

• Radius corner design engages the flats of the fastener, not the corners, providing up-to 15 to 20% more torque while reducing fastener rounding, enhancing the turning of worn fasteners
• EYE-D markings optimize size visibility, also providing SAE/metric differentiation
• Socket wall dimensions are optimized to provide strength while retaining access to restricted fasteners