The Singer Model 191D-30 is a Single Needle, High Speed (4,000 spm.) Sewing Machine with an Auto Lubricating Hook, Horizontal Axis Hook and Bobbin, and Adjustable Reverse Feed. This machine comes complete with a table, servo-motor and stand.
The Singer Model 20U73 is a zig-zag tailoring machine capable of sewing 2000 stitches per minute. The machine has three needle positions; left, right, and center. It also has a built-in bobbin winder and adjustable forward and reverse stitch lengths.