... etc. Cotton 20/1, 20/2, 20/3, 30/1, 30/2, 30/3, 40/1, 40/2, 40/3, 50/1, 50 ... /2, 50/3 etc Nylon 70D,100D ... tube, OEM/ODM acceptable Packing method 1 tube insert a opp,and many tube in a carton tennis ball with elastic string and computer string