The GripEdge Tools 9-pc RPT Long Metric Hex Key Set, No. LKHM9LS, is designed for deep or obstructed metric hex fasteners requiring extended reach and angled access. The patented RPT ball hex geometry allows for superior grip and 20-degree pivot capability. The extra-long bar length gives the user enhanced reach in recessed applications. Constructed from S2 tool steel with black manganese finish. Features a round bar design with knurled section for positive grip in wet or oily conditions. Large laser-etched size markings and Color-Eye-D coding. Locking, folding wallet-style holder with patented C-Grip slot geometry for secure retention and precise removal. Included sizes: 1.5 mm, 2 mm, 2.5 mm, 3 mm, 4 mm, 5 mm, 6 mm, 8 mm, 10 mm.