These stainless steel headpins are 23 gauge thick with a ball end of about 2mm round. Choose your length of 20mm long (3/4").?
Sold in lots of?200 ballpins.
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Short Stainless Steel Ballpins, 20mm (3/4" inch), 0.6mm thick, 23 gauge, Lot Size 200 (Approximately), #1300