Build an earring that will not walk off an ear: the threaded screwpost and matching screw nut lock together instead of relying on friction, which is what customers want for a stone worth losing sleep over. Each set pairs one threaded post with one two-hole screw nut and is sold by the piece, one post and one nut per piece ordered. The post measures 0.91 mm (.036") in diameter and 11.1 mm (.437") in length. The nut is a two-hole screw style with a 6.0 mm outside diameter and a 0.91 mm (.036") hole sized to the post. Four alloys are stocked: 14K yellow, 14K white, 18K yellow, and 18K white gold. Made in the USA with 100% recycled gold by a precious metal findings manufacturer certified to ISO 14001:2015 Environmental and ISO 9001:2015 Quality Management System standards. Features Threaded screwpost design for a secure, adjustable fit Two-hole screw nut back for added stability Post and nut supplied together as one matched set per piece Available in 14K and 18K yellow and white gold Made in the USA using 100% recycled gold Manufacturer certified to ISO 14001:2015 and ISO 9001:2015 standards Available Options Part # Metal Type 240-07 14K Yellow Gold 241-07 14K White Gold 24C-07 18K Yellow Gold 24E-07 18K White Gold Notes Each piece ordered is one threaded screwpost plus one two-hole screw nut. Order 2 pieces for a pair, which is 2 posts and 2 nuts. All findings are sold by the piece unless otherwise noted. Component references: post 07po, nut 07.