23 guage Micro Pins: 1.China No.1 Micro Pins Brand, ... 8mm to 30mm, 3.Copper or stainless steel facing treament. 23 gauge Micro PinsFeatures and benefits:1.MEITE's P630 23GA ... Stainless Steel.Diameter:0.63mm,18GAPacking: 10000pcs/box 48boxes/ctn 23 gauge Micro Pins