Heavy Duty Surface Bolts for Doors are available in various sizes, including 25mm, 32mm, and 38mm widths, and lengths ranging from 3 inches, 3.5 inches, 4 inches, 5 inches, 6 inches, and 7 inches, to meet the installation requirements of various door types. With standard mounting holes, they are easy to install and suitable for wooden doors, metal doors, and some sliding doors, making them particularly suitable for locations requiring high-strength fixing.