Stahlwille603759 51 10 03020010 Hex Head Bits 10 mm 1/2" (12.5 mm) - Stahlwille 03020017, Long design according to DIN 3124 and ISO 2725-1. Manufactured from hpq ® high-performance steel, chrome-plated surface. Stahlwille 51 17 03020017 Hex Head Bits 17 mm 1/2" (12.5 mm)