A half-inch drive 6 point convex drive with a 19 millimeter deep socket composed of mirror-chrome-finished chrome vanadium steel. Technical Specifications Ampro Industries, the manufacturer, Part Number T335519 The product weighs 150.25 grams and measures 12.7 x 5.08 x 2.54 cm. The manufacturer has discontinued item model number T335519; there is no item package quantity available.