This needle type is generally used for a sewing machine and for knit fabric sewing projects. You should still change the needles though as they might get damaged when youre in the middle of your next project or 10 hrs round.
Working with the wrong needle size or type for a certain fabric or sewing style is a common mistake among sewing machine newbies. Shoulder a part that follows the shank.
Use a universal point needle if you are sewing with woven and knit fabric as it can slip through fabric waves.
Shoulder a part that follows the shank. A sewing machine needle is a specialized needle for use in a sewing machinea sewing machine needle consists of.