These stainless steel ballpins are 70mm long (2-3/4") and are 0.6mm thick (about 23 gauge) with a ball end of 1.8mm. They are thin but sturdy. The thinness of these ball pins makes it easier to create a wrapped loop. And they are longer allowing stacking of many beads while still having enough wire for a wrapped loop.
Sold in lots of 500 pieces. Quantity is approximate.