Armor-Tool P7-HH Auto-Adjust Hold Down Dog Clamp Auto-adjust clamping technology - no need to adjust Clamp as you change the material thickness. Saves time and hassle Easy one hand operation. Adjustable clamping pressure from 25-400 lbs. With a 7.5" tall 3/4" diameter dog peg for a vertical clamping range up to 5.5" above the table Interchangeable 7.5" 20mm dog peg sold separately, and 3" dog peg in 3/4" or 20mm for tables with short depth restriction Full 360 Degree rotation with a pivoting spindle to accommodate variations in material shape