Pack of 10 ORGAN ELX705 SUK Ball Point Home Serger & CoverStitch Machine Needles. These ELX705 needles are made specifically for home serger & cover stitching. It has 2 grooves, a slightly longer scarf and a light ball point. If your serger calls for a 15X1 needle and is breaking threads, the 2nd groove on this needle may solve your problem. Perfect for multi-purpose sergers that do the coverstitching, overlock and safety stitches. If your serger takes a flat shank needles, then these needles will fit your serger. Needle System : ELX705-SUK Ball Point (Same as SY2922 & 2022) One side of the shank on these needles is flat and the other is round. Organ ELX705-SUK Ball Point needles are available in following sizes. Please select your size. Size 11 (Metric Size 75) Size 12 (Metric Size 80) Size 14 (Metric Size 90) Lower size numbers are narrower or thinner needles used for lighter materials. Higher size numbers indicate a needle of thicker diameter, used for heavier materials. These are standard home sewing machine needles with a flat shank for most home sewing machines and sergers.