1 Inch Solid Brass Swivel Snaps 3 1/4 Inch Long 1 Inch Square
3/4 Inch Solid Brass Swivel 3 Inch Long 3/4 Inch Square
1/2 Inch Solid Brass Swivel 2 1/8 Inch Long 1/2 Inch Square
 
Hard To Find
3/8 Inch Solid Brass Swivel, 1 3/4 Inch Long Round Bottom Holds 4 mm Leash thickness.