I use a Tacksew t111-155 upholstery walking foot machine. I need to order more feet and can't figure out the difference of a 2 toe or 1 toe foot. I’m confused, I currently have the 2 toe foot, I use it to sew cording around cushions or pillows. What is the purpose of the 1 toe foot? I really appreciate your help. **2 toe foot: http://www.ebay.com/itm/CONSEW-206RB-225-226-SMOOTH-BOTTOM-PIPING-WELTING-10mm-/390368401826?pt=LH_DefaultDomain_0&hash=item5ae3c519a2 1 toe foot: http://www.ebay.com/itm/111W-LU563-206RB-RIGHT-TOE-PIPING-WALKING-FOOT-SET-4mm-/320335116292?pt=LH_DefaultDomain_0&hash=item4a9575f804
