Solid brass ball pins for jewelry making Qty: 200pc Size: 50mmGauge: 22 gauge (0.6mm)Ball: 1.7mmMaterial: Brass Features: Nickel Free ⚠Kindly note: the lower the gauge number, thicker the pin. Example: 24 gauge bends easily and is very pliable. 20 gauge is thick and more ideal for projects that do not require a very thin wire or the ability to wire wrap.