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 punch body has a deep knurled grip for easy handling and better one-handed control. User Guide: Use the heavy head to mark the center of a hole you want to create. Press down firmly on the handle and press in the direction of the punch. After pressing the punch into the shank for a short time, the powerful spring will forcefully eject the punch. Center Punch with Red Caps: The punch shank body 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 shank allows for comfortable working and reduces user fatigue. The precision center point increases control for more accurate holes. Wide Application: The automatic center punch is suitable for a variety of tasks, such as paneling on materials, glass breakers, belt awl, marking on the wall and so on. The spring-loaded tool helps walk your workpiece with a hollow to give you a starting point that prevents screws and drill bits from moving; Use this automatic center punch for metal, wood, glass, canvas, plastic, and leather. Automatic Center Punch with Red Cap: Material: Chrome-plated steel Color: Silver/Red Product Dimensions: 133 mm. Automatic Center Punch with Blue Cap: Material: High-speed steel. Color: Silver/Blue. Product Dimensions: 133 mm. Features: The center punch is made of high-speed steel, the durable punch body can withstand strong impact force and resist corrosion. Suitable for DIY, home, and general construction. The punch body has a deep knurled grip for easy handling and better control. The center metal cushion cap is made of rigid ABS engineering plastic, the adjustable shock cap makes a good cushion for your hand against the impact of the spring. Ideal for marking, punching, poking and scribbling on wood, metal, glass, plastic, leather, fiberboard, particleboard, plywood, aluminum panel or wall surface, etc. Contents: 2 x Automatic Center Punch with Red Cap.