This listing is for 1 packs of 10 NEEDLES ( 10 TOTAL) size #14-HAX1SP for the WHITE SPEEDYLOCK & SUPERLOCK OVERLOCK (Serger) Sewing Machine. These Needles fit WHITE SERGER MODELS: Normal 0 false false false EN-US X-NONE X-NONE MicrosoftInternetExplorer4 206, 208, 216, 228, 299D, 234DE, 503, 504, 523, 534, 534D, 634D, 734D, 734DW, 834DW, 1300DE, 1500, 1600, 1634D, 1700, 1800, 1900, 1934D, 2000ATS, 2500, 2900, 4500, 7234, 7340, 7934WD, 8234, S-34, S-34D, SL-34, SL-34D, SL234D, SL234DE, SL3400. The SIZE of the Needles in this listing is: #14-HAX1SP (Metric Size 90)This is a special version of the 15x1 for stretch or elastic materials and tightly woven knits. It is made to higher standards, it has the snake's head shape due to a combination of a slightly bulged eye and a slightly reduced blade above the eye. The bulged eye opens a slightly larger space in the material and the thinner blade above the eye reduces contact between the material and the needle . This reduces needle heat-up and prevents skip stitches. Powered by amazon Blackthorne 04.01.013