Klein Tools 7-Piece Nut Driver Set with Cushion Grip for driving hex nuts. This set includes 630-3/16, 630-1/4, 630-5/16, 630-11/32, 630-3/8, 630-7/17 & 630-1/2 nut drivers, all with 3-inch shafts. Each nut driver features Tip-Ident for quick identification of the nut driver and size. The cushion grip handles provide greater torque and comfort, with no slippage. This set is made of durable steel with a chrome finish for long-lasting performance.