PanaVise is a major manufacture of Vises and Work Holding Tools. PanaVise's Tilt, Turn & Rotate technology has been applied to the product line, allowing for maximum efficiency and many different uses! All PanaVise Products are covered by a Limited Lifetime ! Introducing the Panavise 376 SELF-CENTERING, EXTRA WIDE OPENING HEAD, Hold larger, heavier objects with this versatile Vise Head! By centering weight, this Vise Heads holds even larger and heavier objects with ease. Jaws open a full 9-Inch. Self-centering, extra-wide opening jaws open a full 9 (228. 6mm) and hold heavy objects by centering weight over the base. Ribbed, neoprene jaw pads are 1. 875 (47. 6mm) high x 1. 5 (38. 1mm) wide and provide a sure grip; reverse the pads and the wide V holds round or elliptical objects. Double action jaws open/close quickly. Jaws can be reversed to provide zero closure. Black oxide coating reduces glare and promotes eye comfort. Compatible with all 300 series Bases. Head Length: 11. 5 (292. 1mm). Height (shaft to top of jaw pads): 5. 25 (133. 3mm), Weight: 1. 9 lbs. (0. 9kg). Limited Lifetime !