You are looking at one brand new Tandy Leather Plastic Slide Line 24 Holster Snap.  This item 1270-00 has a nickel plated finish line 24 snap socket that is already placed into the plastic.  It fits a 3/4" wide strap through its plastic slide to secure a pistol into a holster.  It can also be used where any adjustable strap measuring 3/4" wide is needed. Thank you for looking.