The rounded needle tip keeps fibers from shredding.
There are some sewing situations where having a very sharp tip on your needle is not a good thing.
For example, when you're sewing knits or stretch fabrics. In these cases, a sharp tip can cut or shred the fibers, leaving needle holes in your fabric.
This is when you want to use the Janome Ball Point Needle. It has a slightly rounded tip (ball point) to push between the fibers instead of cutting them.
The head of the Ball Point Needle has a combination of both a slightly bulged eye and a reduced blade over the eye, giving it a "snake's head" shape. The bulged eye opens a slightly larger space in the material and the thinner blade reduces contact between the needle and the fabric. This keeps the needle from heating up, preventing skipped stitches.
Additionally, the scarf of the needle is deeper allowing for a larger loop for forming the stitch, another guard against skipped stitches.
These needles works in all Janome flat back machines
