Set includes: MaxxTor® Insert Bits Hex Metric 4.0, 5.0, 6.0mm, Hex Inch 5/32", 3/16", 7/32" | Bit Buddy Holder MaxxTor Impact Bits have energy absorbing torsion zone for 120 times performance over standard bits Exact fit precision machined tip for reduced cam-out Standard 1/4" hex drive for universal application Available in 1" and 2" lengths for versatile utility