SIZEPlastic buckle width 1 inch, fit the 1-inch wide strap Webbing. length of Buckles:2.7, external wide:1.3,thickness:0.5. DUAL-SIDE ADJUSTABLE,NO SEWINGYou can adjust the strap on both sides. The regular quick side release buckles require you to sew one of them in place, no sewing is needed the buckle has two slots to feed the strap through. HEAVY DUTY Strong Tensile Strength Holds Up to 150 lbs. Military Grade. Reliable and Durable. MULTI-FONCTIONPerfect quick release buckles for nylon webbing straps,Great for replacing the piece on the backpackfanny Pack straps belt dog collars. they can replace the waist strap buckle on a hiking backpack baby carrier. MATERIAPolypropylene side release buckles feature good flexibility and strong pulling, thicker and durable than standard bucklesHeavy duty buckles are easy to install and adjust