Description: Color: silver, blackļ¼golden Main body material: nickel-chromium alloy steel Handle material: high carbon steel Model: 128mm/130mm/155mm Application: metal, plastic, wood dotting positioning Size: Small silver: length 128mm * diameter 12.5mm * punch diameter 4mm; Large silver: length 155mm * diameter 15.5mm * punch diameter 6mm; Gold and black: length 130mm * diameter 12.5mm * punch 4mm Punch material: chrome vanadium diamond punch Usage: Suitable for punching operations on materials such as wood, iron, aluminum, glass, etc Attention: Do not strike stainless steel and marble, the hardness of the punch is not enough (If the car door and window cannot be opened in an accident, this punch can be used to break the glass and escape) Features: 1. Good quality: Made from high-carbon steel, sturdy and high hardness, automatic center punch is a tool with a conical point, which is used making an indentation in an object; 2. Convenient to use: This punch has a mechanism that automatically strikes a blow when downward pressure is applied; No hammer is required. 3. Multi use: Actually works and makes a solid mark in wood, metal, steel, aluminum, brass, copper and more 4. Non slip: With textured handle, ergonomic and non slip, comfortable to grip, easy to control. Notes: 1. Please allowed 1-3mm differences due to manual measurement, thank you for your understanding! 2. Due to the difference between different monitors, please understand that the picture may not reflect the actual color of the item. Package list: 2PCS(1*Small silver Centre Punch+1Large silver Centre Punch) OR 4PCS(2*Gold Centre Punch +2* black Centre Punch)