M35 High Speed Steel Twist Drill Bit, Gold Oxide 7mm Drill Dia. 300mm Length 6x10x25mm Used on window doors to

Used on window doors to improve energy efficiency by sealing gaps and leaks which allow outside air to enter

They provide the best combination of traction

- Stroke & Force : 10mm

Rated Capacity: 8uF

M35 High Speed Steel Twist Drill Bit, Gold Oxide 7mm Drill Dia. 300mm Length 6x10x25mm Used on window doors toDescription 1. Made of M35 HSS(High Speed Steel) cobalt steel. With high hardness and red hardness, wear resistant, and fast drilling performance. 2. The gold oxide surface treatment increases the hardness of the drill bit, provides longer drilling life and better drilling performance, and is more durable and corrosion resistant than uncoated drill bits. 3. Suitable for drilling hard materials and hard metals such as cast iron, hard plastics, but also