For easy insertion of concealed zippers. No need to use iron to press the zipper edges before sewing! Just finger press the zipper coils up, and line up the groove of the foot to the edges. Will Fit Popular Models Listed Below:  This Foot Will Fit The Following Models:  Innov-is 15 A16 A50 A60 A65 A80 A150 F560 F580 F420 V5LE NV2600 NV2700 NV1800Q NV1300 XR27NT XR37NT NV2750D XP3 VQ2 M380D XJ1 FS210 FS180QC FS130QC FS250FE SH40 XJ2