1/4" X 12" HSS Aircraft Extension Drill Bit, D/AA/C Shopify Collective Internal Diameter: 7/16"-14

Internal Diameter: 7/16"-14

Part Number: 87FHLNL9Y

Length: 70MM

Part Number: VibraTite12210ml

but soft enough to avoid marring delicate work surfaces

1/4" X 12" HSS Aircraft Extension Drill Bit, D/AA/C Shopify Collective Internal Diameter: 7/16"-14Product Description A dependable, general purpose high speed steel drill bit ideal for production, maintenance or portable drilling jobs. They are for use in a wide range of materials such as aluminum, brass, copper, metal, plastic and wood. They are surface treated with abrasion resistant black oxide and made of high speed steel with a 135 split point tip for fast penetration and accurate drilling. Ideal for drilling where extra length for reach is