Sterile Soft Plug Extended Duration plugs are made from an absorbable copolymer of glycolic acid and trimethylene carbonate that last up to 180 days. Plugs measure from 0.3-0.5mm in diameter and 2mm in length. Inserter not included. Manufactured by Oasis (part number #6200V). Comes two plugs per package, 20 plugs per box (3 pairs 0.3mm, 4 pairs 0.4mm, 3 pairs 0.5mm).