"Speed zone" for turning in lower torque applications Black oxide non-slip tip Magnetic tip Tri-lobe ergonomic handle to offer optimal balance power and comfort Dual material handle for comfort and performance Meets or exceeds ASME B107.15 Overall Length 20.900� Handle Size (Diameter X Length): 1.45� x 5.11� Tip Style Slotted Blade Type Black Oxide Non-Slip ASME Specification B107.15 Tip Thickness 0.055� Blade Diameter 0.315� Blade Length 16� Tip Size 3/8�