While classed as clamps these welding clamps are designed to be placed and moved quickly so they use the same mechanism as locking-pliers.

Amazon Basics Metal Face Clamp, 11-inch, 2-Pack, Black/Silver
5.0
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6” Welding Locking C Clamps Adjustable Fastener with Quick Release Grip 2 Pack
5.0

IRWIN Irwin Visegrip 6R Locking C Clamp 6In - Regular Tip Silver
5.0