Threads L-21-81(21G-60mm-80mm, Non-Cog)Half L type *PDO Threads are made after ordering, the delivery may be delayed by 2~3 business days" This product is made exclusively for the nose. Compared to other products, it is easily inserted inside during treatment as needle hole and thread are attached and it was developed to prevent dorsum nasi from splitting apart. Non COG Model Number Needle Gauge Needle Length Thread Length USP Size One Package L 21 81 21G 60mm 80mm 1 20pcs Half L Type