Stanley’s FatMax Xtreme Auto Trigger Clamp closes quickly when you push one button. It also converts to a spreader, exerting 450 pounds of force. The 12" jaw capacity model has a suggested price of $24.99.
I have been ordering from Rockler for almost 20 years and have found their products to be very inexpensive and of high quality. Shipping is fast even when an item is back ordered. The best prices I have found anywhere."- Orval - 08/07/2012