General description Impact Hex Heads Key Bit Set (Metric & SAE) includes 20 pieces of high-quality hex wrench drill bits designed for impact drivers and heavy screw driving tasks. The set features a torsion zone that absorbs torque peaks to prevent breakage, making it ideal for various applications, including home repairs and automotive work. Technical specifications Set includes 10 metric hex bits: 1.5mm, 2mm, 2.5mm, 3mm, 3.5mm, 4mm, 5mm, 6mm, 7mm, 8mm Set includes 10 SAE hex bits: 5/64inch, 3/32inch, 7/64inch, 1/8inch, 9/64inch, 5/32inch, 3/16inch, 7/32inch, 1/4inch, 5/16inch 1/4inch quick release hex-shank Length of hex bits: 4 inches Material: S2 alloy steel with manganese phosphate coating to prevent rust Other information