:SA140 The walking foot is a moving feed system that holds and moves fabric between the presser foot's upper feed dog and the machines's lower feed dogs to better control difficult fabrics as well as multiple layers of fabric. Walking Feet are not for use in reverse or side to side sewing as well as some built in stitches that include other than forward movement of the feed dogs. The walking foot is great for quilting, sewing when matching prints or plaids or fabric drift is an issue. For Use With:ULT-2003D, ES-2000, PC-8500D, NX-200, SE-270D, PC-6500, NX-600, NX-400, CS-8072, Innov-ís 2500D, Innov-ís 1000, Innov-ís 1500D, Innov-ís 4000D, PC-2800, PC-3000, PC-4000, PC-5000, PC-6000, PC-7000, PC-7500, PC-8200, PS-2200, PS-2300, PS-2500, ULT-2001, ULT-2002D, CS-6000T, CE-4000, CS-6000i, EX-660, HE-120, PC-8500, CS-100T, NX-450, NX-250, NX-450Q, NX-650Q, Innov-ís 1200, QC-1000, PC-210, PC-420, NX-400Q, BC-1000, CS-6000, CS-6000B, DuettaTM 4500D, Innov-ís 40- Limited Edition, Innov-ís 80- Limited Edition, PC210PRW - NEW Ltd Edition, PC420PRW - NEW Ltd Edition, Innov-ís 900D, SE-350, CE-5000PRW, XR-7700, LB6770 PRW - Limited Edition,PC-8200, PC-8500, PC8500D (* Low Shank adapter is required for the PC-8200/PC-8500/PC-8500D).