29 piece, gold oxide, drill bit set, consists of: 1/16″, 5/64″, 3/32″, 7/64″, 1/8″, 9/64″, 5/32″, 11/64″, 3/16″, 13/64″, 7/32″, 15/64″, 1/4″, 17/64″, 9/32″, 19/64″, 5/16″, 21/64″, 11/32″, 23/64″, 3/8″, 25/64″, 13/32″, 27/64″, 7/16″, 29/64″, 15/32″, 31/64″ & 1/2″, versatile general purpose drill bit set features gold oxide coating, shanks that fit standard 3-jaw drills, use in drilling wood, plastic & light gauge metal, bits 1/8″ & larger feature 135 degree split points on the tips to reduce bit walking, gold oxide coating provides longer bit life by resisting heat buildup, standard shank diameters fits standard 3-jaw drills, both corded & cordless, universal drilling applications designed for general purpose drilling in wood, plastic & light gauge metal.