Description Circle Diameters 6 mm, 8 mm, 10 mm, 13 mm, 16 mm, 19 mm, 22 mm, 25 mm 1/4", 5/16", 3/8", 1/2", 5/8", 3/4", 7/8", 1" Dial Settings Dial (500 = 1 circle): 99, 83, 63, 50, 38, 31, 28, 25 Stitches per circle: 5, 6, 8, 10, 13, 16, 18, 20 Variocontrol Settings Double circle: 13, 15, 19, 23, 29, 35, 39, 43 Straight tack: 8-10, 9-11, 11-13, 13-15, 16-19, 19-24, 21-27, 23-30 Do not exceed stitch length 5 mm / 3/16" Needle and Thread Specifications Needle for fabric: Schmetz 7 x 23 - 160 Needle for leather: Lammertz 7 x 23 tri tip 160/22 Thread: cotton wrap polyester, metric size 36 Ticket size 24