3/4" Self-Locking Metal Buckle for Shrink Wrap Strapping Systems - 25 - Walmart.com
Amazon.com: Dr. Shrink DS-050 1/2" Self Locking Buckle - Pack of 100 : Dr. Shrink: Industrial & Scientific
1/2" Metal Strapping Buckles
Amazon.com: IDL Packaging Phosphate Buckles for 3/4" Strap Width Woven Cord Strapping (Pack of 500) - Heavy-Duty Reusable Buckles with Anti-Slip Coating - Sturdy Metal Wire and High Holding Power : Industrial