16mm 22mm 28mm DIN Series Inserta Welding Table Clamps with T Handle - China Adjustable Welding Clamp, Welding Table Clamp | Made-in-China.com
Inserta Clamp - 5/8" System
Lincoln Electric Welding Clamp Set - 8 Clamps for 16mm Fixture Holes, Secure Round and Square Tubing, Oversized Heads for Maximum Clamping in the Welding & Cutting Accessories department at Lowes.com
8.5 Inch BuildPro Inserta Clamps • Texas Metal Works