Dormer A123 Series HSS Twist Drill Bit, 4mm Diameter, 55 mm Overall

High-quality standard metal stub drills. Designed for drilling out spot welds to release steel panels and sheets. Manufactured from High Speed Steel (HSS) for consistent and reliable performance. These stub drills have been steam tempered to improve performance to ensure a maintained sharp cutting edge under extreme conditions. Featuring 120° degree point for easy penetration in hand held applications and special web to enable self-centering ability. These stub drills are common spot weld sizes found in the automotive and trailer repair industry. The short flute design provides rigidity for hand held drilling of thin panels and sheet.

• Standard 120° Point
• Point design remains sharp under extreme conditions
• Special web design for improved penetration
• Zero body clearance for increased stability and breakthrough
• Short Flute
• Available in a range of sizes to suit common rivets, screws and bolts