ALFA TOOLS (1 box/ 6 Pack) 1/2" High-speed steel black oxide and gold finish blitz bit jobber length drill ). Black and gold finish for drilling the widest range of materials like mild steel, stainless steel and non-ferrous metals. 1/2" diameter (0.5000"). 135 degree split point, right hand spiral, straight shank. Made in USA. 1 per Card. (BB74129