Brother pin tuck foot 7 grooves cat e this presser foot has 7 grooves and produces perfect pin tucks and corded pin tucks using a twin needle on lightweight fabric a specially designed bobbin cover is also included with this presser foot 1 install and manually thread a twin needle 2 draw a reference line to guide your first row of stitching and use that to sew the first row in the center position 3 further rows can be evenly spaced by placing the completed row in one of the grooves 4