Plastic (Delrin) Side Release BucklesNote that larger sizes are flat, not contoured. Only the 2" buckles are branded (YKK). 2" Flat Plastic Buckles YKK brand For use with 2 inch webbing Outside length: 3. 125 Inch * Outside width: 2. 25 Inch * Color: Black 1. 5" Flat Plastic Buckles For use with 1. 5 inch webbing Outside length: 2. 9375 Inch * Outside width: 1. 75 Inch * Color: Black 1" Contoured Plastic Buckles For use with 1 inch webbing Outside length: 2. 29 Inch * Outside width: 1.