Center punch with blue caps: made of high-speed steel, resistant to strong impact, wear-resistant and rust-proof to extend the life of the punch. High-speed steel hardness: HRC58 ~ 60. The center punch cap is made of rigid ABS engineering plastic. The blue adjustable impact cap can be increased or decreased. The hole punch body has a deep knurled grip for easy handling and better one-handed control. Use Guide: Use the heavy head to mark the center of a hole you want to create. Press the handle firmly and press in the direction of the punch. After pressing the punch into the shaft for a short time, the powerful spring will vigorously eject the punch. Center Punch with Red Caps: The body of the punch shaft is made of chrome-plated steel for maximum strength and durability, which allows for high impact force and resists corrosion; spring-loaded center. Unique Design: Non-slip knurled surface on spring-loaded shaft allows for comfortable working and reduces user fatigue. Precision centered tip increases control for more accurate holes. Wide Application: The automatic center punch is suitable for a variety of tasks, such as sign on materials, glass window breaker, belt awl, marking on wall and so on. The spring-loaded tool helps to step your workpiece with a hollow to give you a starting point that prevents screws and drill bits from moving; use this automatic punch for metal, wood, glass, canvas, plastic and leather. Automatic Center Punch with Red Cap: Material: Chrome Steel Color: Silver/Red Product Dimensions: 133mm. Automatic Center Punch with Blue Cap: Material: High Speed Steel. Color: Silver/Blue. Product Dimensions: 133mm. Features: The center punch is made of high speed steel, durable punch body can withstand strong impact force and resist corrosion. Suitable for DIY, home and general building. The punch body has a deep knurled grip for easy handling and better control. The center metal cushion cap is made of hard ABS engineering plastic, the adjustable shock cap makes a good cushion for your hand against the impact of the spring. Ideal for marking, punching, prick and scribbling on wood, metal, glass, plastic, leather, fiberboard, particleboard, plywood, aluminum panel or wall surface, etc. Package includes: 2 x Automatic Center Punch with Red Cap. PACKAGE INCLUDES - 3 pieces 1.5/2/3 point center punches, body length: