LEIGAO Dual side Adjustable,Don't need SewingThe regular 50mm side release buckles require you to sew one of them in place,Don't need sewing with our 50mm side release buckles because both the male and female side both have two slots to feed the strap through.You can adjust the strap on both sides. Easy to replace and useVery easy to replace the regular release buckles or broken buckle on the hiking backpack and fanny Pack straps and carrier,waist pack,belt dog collars,harnesses, cat collars etc. They attach easily to web straps without the need for sewing. They are strong yet simple to use. 50mm strap buckleThese plastic buckle clips are used on 50mm wide strap,So called 50mm strap buckles. Great Side release bucklesGreat as webbing/strap buckles and plastic snap buckles,easy one-handed release and no accidental release. The 50mm plastic clips are quite easy to clip and un-clip.And The keyed buckles dont twist when buckling or un-buckling. ColorBlack size:Length 88x Width 60 xThickness 15mm. You will get2 pcs release buckles