Though there’s no information on Irwin’s website yet, Rockler has started advertising Irwin’s new SL300 Quick-Grip clamps. The new swiveling-jaw design gives you an improved grip on surfaces that aren’t parallel and compensates for the flexing of the clamp itself.
The Quick-Grip now employs a spring-loaded, quick-change screw to hold the fixed jaw in place. The screw keeps the jaw from rattling and makes it easy to transform the clamp into a spreader. Like the other Quick-Grips, Irwin manufactures the SL300 with a lightweight and strong resin, but apparently they’ve beefed up the heat-treated, carbon-steel I-beam to provide 20% more clamping power.
You can get Irwin’s Quick-Grip SL300 clamps from Rockler in 6″, 12″, 18″, and 24″ versions for $23, $26, $29, and $35 respectively.