This is a set of 5 pieces of sewing machine needles by Singer, with the code N2045S. They are special needles designed exclusively for sewing leather (Leather Needles).

The main difference from regular needles is the tip. It is not rounded, but sharp (triangular). This tip is designed to "cut" or pierce cleanly through leather, vinyl, or other very tough, non-woven materials, allowing the needle to pass through easily without skipping stitches.