Specifications include, but are not limited to: Automatic Oil Lubrication to help Improve Reliability and Reduce Maintenance Costs Bottom Feed Adjusting mechanism to prevent uneven material feed without changing stitch pitches Reduced lift of feed dog prevents material flopping and reduces operating noise and vibration Rectangular feed mechanism to help feed heavy weight materials smoothly Adjustable stitch length of up to 9mm Alternating vertical movement mechanism to prevent irregular stitches High 16mm presser foot to enable easy material handling Vertical-axis, double capacity hook to reduce the frequency of bobbin thread replacement Full Function features that include automatic needle position, programmable back tack, auto foot lift, and stitch counting. Single needle, full function walking foot machine.