Self Retaining ACM [Lewicky] 20g X 3 Flexible tubing 25 cm (10 in). Inner diameter 1 mm (.04 in); outer diameter 2 mm (.08 in) Unique annular rings start .75 mm from 55 degree beveled tip for retaining without sutures .90 x 3.5 mm (20G x 9/64 in) 3 per box