2 Packs Center Hole Punch with 2 Replacement Tips，High Speed Steel Hardness HRC58°~62 for Metal Wood Window Glass

1、Material: Made of high quality high-speed steel material, strong and durable，The head punch is made of HSS high-speed steel with a hardness of HRC58-60.

2、What You Get-- 2 pieces silver black automatic center punches and 2 pieces replacement punches, which means you can get four center punches one time.

3、Unique design: The centre punch is ergonomically designed with a non-slip diamond pattern, which increases the friction between the hand and the spring-loaded centre punch handle during operation, making it easier to keep it perpendicular to the work piece and to force out the positioning holes

4、Dimension-- The outer diameter of the product is about 12.5mm, the total length is 128mm, so it would be small but handy, fits well in the hand.