These larger 5/8″ buckles are commonly used for the King Cobra paracord bracelets. Sturdy and not hard to open since they have little grooves inside the female end that keep the male aligned when taking apart. These have less rattle(fit tighter) and a thicker end bar on the female side than many others.
letters KAM on the end bar
Has thicker end bars than most other 5/8 buckles
Has less chatter (fits tighter) than most 5/8 buckles
total length is 1 1/2″ width at the widest point is 0.9″ webbing hole is .64″ or 16mm (5/8″= .625″)