14PC Stock:
^_. I.D: 10mm, O.D:12mm ;    I.D: 12mm, O.D:14mm ;
^_. I.D: 14mm, O.D:16mm ;    I.D: 15mm, O.D:17mm ;
^_. I.D: 16mm, O.D:18mm ;    I.D: 18mm, O.D:20mm ;
^_. I.D: 20mm, O.D:22mm ;    I.D: 22mm, O.D:24mm ;
^_. I.D: 25mm, O.D:27mm ;    I.D: 28mm, O.D:30mm ;
^_. I.D: 30mm, O.D:34mm ;    I.D: 32mm, O.D:36mm ; 
^_. I.D: 35mm, O.D:40mm ;    I.D: 38mm, O.D:42mm ;