135<deg> split point for no slip starting on hard materials, prevents walking of drill bit. Black oxide coating for additional corrosion resistance. Can be used for drilling in metal, wood, or plastic. Jobbers length. Set includes: (2) 1/16", 5/64", (2) 3/32", 7/64", (2) 1/8", 9/64", 5/32", 3/16", 7/32", 1/4", 5/16", and 3/8". Packaged in durable rubber-gripped plastic case.