thus the present invention will provide a consistently uniform high quality 34 j 34 stitch on virtually all type of jeans garments as shown in fig1 jeans panel 10 has folded edge portion 12 the apparatus for folding this edge portion back onto the jeans panel will be more fully described hereinafter the assembled fly 14 comprises left fly 16 right fly 18 and zipper tape 20 which interconnects the left and right pieces the assembled fly is interconnected to the jeans panel 10 by a 34 j 34 stitch 22 illustrated in fig2 formed by a dual needle sewing machine in order to improve the quality of the garment it is imperative that the curved portion 22a of the 34 j 34 stitch be of uniform radius and that the stem portion 22b be parallel to the edge of folded portion 12 the apparatus according to the invention is utilized with a sewing machine 24 rigidly mounted on table structure 26 the sewing machine per se forms no part of the instant invention and any known sewing machine having a single needle or dual needles 28a and 28b may be utilized in accordance with this invention carriage 30 is slidably attached to the upper surface of table structure 26 so as to translate in the direction of double arrow 32 in fig3 generally perpendicular to the plane of the sewing needles 28a and 28b outer disc 34 and inner disc 36 are mounted flush with the upper surface of carriage 30 in nested fashion such that the upper surfaces of the carriage 30 the outer disc 34.