Bessey MMS-4 4-Inch MightyMini All Steel Sliding Arm Clamp
The Mighty Mini all steel sliding arm moves to position itself right next to your workpiece to support the Acme threaded screw. Stronger and 9 times faster than a C-clamp. General Purpose, Light Duty All Steel Sliding Arm Clamp. 4" Capacity, 2-1/4" Throat Depth, 660 lbs Clamping Pressure.