HOW TO FIT: Prescott Plastics 1" Sheet Metal Body will fit inside hole dimensions of 25.4 mm | 1 in - Compatible Panel Thickness Range 2.8 mm | 0.110 in - Overall Diameter 1.438 in - Overall Height 0.250 in - Head Height 0.094 in Durable: Made from high-quality materials, this product is built to last. It can withstand frequent use and is resistant to wear and tear, ensuring that it will be a reliable tool in your toolkit for years to come. Secure: These plug design guarantees a tight and secure fit, preventing the plugs from slipping or falling out over time. This design ensures that the plugs stay firmly in place and do not get dislodged, making them an excellent choice for high-vibration environments. Versatile: These Sheet Metal Body plugs are perfect for sealing various holes & gaps in automobiles, electrical applications, and DIY projects. They're a valuable addition to any toolkit due to their wide range of applications, making them incredibly useful. MADE IN US: These Plugs are specially designed and produced in US to maintain quality, endurance and durability. HOW TO FIT: Prescott Plastics 1" Sheet Metal Body will fit inside hole dimensions of 25.4 mm | 1 in - Compatible Panel Thickness Range 2.8 mm | 0.110 in - Overall Diameter 1.438 in - Overall Height 0.250 in - Head Height 0.094 in