Rockwell RK9002 JawHorse Sheetmaster Portable Workstation Clamp work pieces 0 to 49-inches, particularly 8x4 plywood sheets Clamp up to 1 ton of force and supports a weight load up to 600 lbs. Versatile & hands-free workstation for clamping, supporting, and holding Folds down quickly for storage and transport.Maximum clamping force 1 Metric Ton Front scooter wheels for easy moving on all terrain even on rough ground