PanaVise 366 Wide Opening Head Jaw pads gently, yet firmly, hold a wide variety of objects including circuit boards, coils and tuners Ribbed, neoprene jaw pads provide a sure grip and can hold and insulate PC boards and other larger objects; reverse the pads and the wide V holds delicate cylindrical objects Compatible with all 300 series Bases Head Length: 11 (279.4mm) Height (shaft to top of jaw pads): 5.125 (130.2mm), Weight: 1.6 lbs (0.7kg) Limited Lifetime Warranty!