Comparison : Item # 121B (1/2"), 1/2 Inch (in) Inside Width (A) Center Bar Buckle
Item # 121B (1/2") CP, 1/2 Inch (in) Inside Width (A) Cadmium Plated Finish Center Bar Buckle
Item # 121B (5/8"), 5/8 Inch (in) Inside Width (A) Center Bar Buckle
Item # 121B (3/4"), 3/4 Inch (in) Inside Width (A) Center Bar Buckle
Item # 121B (7/8"), 7/8 Inch (in) Inside Width (A) Center Bar Buckle