WL Fuller's metric regular length brad-point drill bits are top quality high-speed steel (HSS) and are designed for clean holes in wood, plastics, and sheet metals. The tip of a brad-point drill allows you to perfectly align the center of the hole without drifting as with a v-point or regualr drill bit. Sizes available in LHR (left-hand rotation) when special ordered. Legend below explains sizing. Legend (in inches unless otherwise noted): CD = Cutting Diameter DE = Decimal Equivalent FL = Flute Length OL = Overall Length RHR = Right-Hand Rotation LHR = Left-Hand Rotation Technical Info: W.L. Fuller Inc. is a family owned, third generation, manufacturer of the best countersinks, counterbores, plug cutters, taper point drills, brad-point drills, and step drills. They have over 60 years of experience in manufacturing tools to cut woods, plastics, and metals.