Husqvarna viking 7 groove pin tuck foot cat 5 sew quick tucks in light weight fabrics use with twin needle 1 6 mm 6200736 96 and twin needle 2 mm 6200738 96straight stitch length 2 0other information1 snap on pin tuck foot 2 insert and thread 1 6 or 2 0 mm twin needle 3 sew tucks are formed by twin needle sewing as fabric tunnels into the groove on underside of foot 4 place tuck in outside groove of foot to guide next tuck