Screwdriver socket 1/4 " non sparking ReferenceAlloySquare (C)L1Length (L)079602 BeCu 163 mmScrewdriver socket 1/4 " Beryllium copper 163 mm 1/4 inch 55 mm 163 mm 084002 AlBr 163 mmScrewdriver socket 1/4 " Aluminium bronze 163 mm 1/4 inch 55 mm 163 mm