PV Jr. Mini PanaVise - Model 201 More like a tool than a vise, the grooved jaws open to 2 7/8" (73mm) and are made from fiber reinforced thermal composite alloy. Jaws are controlled with a fine/coarse adjusting knob which permits very delicate work. Head movement is through three planes (360 rotation, 360 swivel and 210 pivot) and is controlled with a single knob. Base is made of die cast zinc, with a 4 5/16" (109.5mm) bolt circle countersunk for 1/4" (6.3mm) flathead bolts (not included).