Pack of 10 Schmetz 206X13 Sewing Machine Needles. Needle System : 206X13 These needles also cross to these different needle systems : HPX13, SY2029, CANU: 21:32 2 Fits Singer models : 206, 306K, 306W, 319K, 319W, 320 Singer models 206, 306, 319 and 320 were designed to use 206x13 needles. Using the common 15x1 needles can result in damage to the machine's bobbin case. This listing is for one package of ten size 12 needles. Schmetz 206x13 needles are only available in sizes 12 and 14.