Vanitek 7 Pc. Standard Inch/Metric Nut Driver Set SAE with Professional Rubber Handles & Hollow Shaft 3" Shafts - Sizes: 3/16, 1/4, 5/16, 11/32, 3/8, 7/16, 1/2. Heat treated carbon steel construction High visibility Orange handles are easy to locate. Non-Slip TPR handles allow maximum twisting force with no discomfort Precision machined socket heads