Description Overview Chainstitch, with computer Serial no.: 23xx Machine size: 90" ultra 12 Needle space: 1 × 3 × 6 Electrical Specifications Machine wired: 220 v, 3 ph, 60 hz Aux transformer: 208 v, 3 ph, 60 hz Control System With nematron / opti touch control panel It has round blades on the back, 12 blades with 2 servo motors