10pcs Organ 135X17 Walking Foot Industrial Sewing Needle Size 20 10 pieces per order Organ 135x17 size 20 Walking Foot Sewing Needle We also carry size: 12, 14, 16, 18, 20, 21, 23, 25. Needle system 135x17 is for Heavy, canvas and vinyl, Needle system 135x16NW is for leather