E-clips come in a variety of sizes to accommodate different shaft diameters. Common sizes are typically measured in millimeters or inches, and they correspond to the shaft diameter they are designed to fit. Standard metric sizes include 1.2mm, 1.5mm, 2mm, 2.5mm, 3mm, 4mm, 5mm, 6mm, 7mm, 8mm, 9mm, 10mm, 12mm, 15mm, 16mm, 18mm, 19mm, 20mm, 22mm, 25mm, and 30mm. In the imperial system, common sizes include 1/16", 3/32", 1/8", 5/32", 3/16", 1/4", 5/16", 3/8", 7/16", 1/2", 9/16", 5/8", 3/4", and 1". These sizes ensure that E-clips can be used in a wide range of applications, from small electronics to larger mechanical assemblies.