Corrosion resistance. Sharper corners for extra grab. Measuring System: Inch. Tip Size: 0.050 in 1/16 in 5/64 in 3/32 in 7/64 in 1/8 in 9/64 in 5/32 in 3/16 in 7/32 in 1/4 in 5/16 in 3/8 in. Tip Type: Hex. Handle Type: L-Handle. Material: Steel. Finish: Black. Length Group: Long. Includes: Holder.