The 381 Vacuum Base PanaVise provides all of the "tilt, turn and rotate" versatility of a 301 Standard PanaVise with the convenience of added portability. A half turn of the mount lever attaches or releases the powerful suction pad and allows rapid set-ups in a variety of locations (for use on smooth, nonporous surfaces only). This combination stands 6-1/8" (157 mm) tall and weighs 2 lbs. 13 oz. (1.3kg).