585-88812 features: -double spur design Scribes the hole before the chips are made, producing a cleaner hole and reducing vibration. -Applicable materials: wood. -Brand name: Speedbor®. -cutting edge material: tool steel. Number of bits: -1. Generic dimensions: -all bits have a 1/4'' Hex shank that fits all drills and 1/4'' Quick Change adapters. -Overall length: 6 in. Dimensions: overall product weight: -0.1 pounds.