16mm 22mm 28mm DIN Series Inserta Welding Table Clamps with T Handle - China Adjustable Welding Clamp, Welding Table Clamp | Made-in-China.com
Lincoln Electric Welding Clamp Set - 8 Clamps for 16mm Fixture Holes, Secure Round and Square Tubing, Black in the Welding & Cutting Accessories department at Lowes.com
2-16002766: Table Press for Clamping & Straightening for the System 16 – Siegmund Welding Tables USA (An Official Division of Quantum Machinery)