The WEN 13-piece black oxide drill bit set includes a variety of reliable bits for all of your drilling needs. Black oxide maximizes the lifespan of your bits by fighting rust and corrosion while the 135-degree split points limit slips and walking. Sizes range from 1/16 of an inch all the way up to 1/4 of an inch. The uniquely shaped base provides a sturdy grip for drill chucks, preventing the bits from slipping or spinning during application. Perfect for making clean holes in metals, woods and plastics. Includes a compact carrying case for convenient storage and transport.