EZ-Clamp Upgrade Kit is designed to replace the original clamping assemblies on older Gilson Tapping Sieve Shakers. Knurled knobs with push-button release slide freely up and down the clamp rods for smooth, easy clamping and more efficient operation. Once in position, release and a quick twist tightly secures the sieve stack. When the test is complete, push the EZ-Clamp button to raise just enough to remove the stack. Upon release of the button the clamps stay in place, ready for the next test. EZ-Clamp kits include free-sliding push-button knobs, an integral sieve cover and new clamp rods.