The 301 Standard PanaVise is an all-purpose work holding unit, perfect for both industrial and home hobbyist applications. A single knob controls the "tilt, turn and rotate" function of the patented split ball, which allows the head to move easily and conveniently through three planes (360° rotation, 360° swivel and 90° pivot). Jaws are 2 1/2" (63.5mm) wide and open to 2 1/4" (57.1mm), and the base features a 4 5/16" (109.5mm) bolt circle. The combination stands 6 3/4" (171.4mm) tall, weighs 2lbs. 11oz. (1.2kg) and features the 300 Standard Base, the 303 Standard Head, and the 343 Nylon Jaws.