50pcs UNC 2# 4# 5 6# 8# US Coarse 304 Stainless 12.9 Black Steel Hex Hexagon Socket Allen Cup Point Grub Headless Bolt Set Screw

50pcs UNC 2# 4# 5 6# 8# US Coarse 304 Stainless 12.9 Black Steel Hex Hexagon Socket Allen Cup Point Grub Headless Bolt Set Screw

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