The GripEdge Tools 13-pc RPT Long SAE Hex Key Set, LKHS13LS, is designed to be used on deep or obstructed SAE hex fasteners requiring extended reach and angled access. Patented RPT ball hex geometry for superior grip and 20-degree pivot capability. Extra-long for enhanced reach in recessed applications. Constructed of S2 tool steel with a black manganese finish. The set includes a round bar design with a knurled section for enhanced grip in wet or oily conditions. Large laser-etched size markings and Color-Eye-D coding. Included sizes: 0.05", 1/16", 5/64", 3/32", 5/64", 3/32", 7/64", 1/8", 9/64", 7/32", 1/4", 5/16", 3/8".