Image Item No. Description  32556  Technic, Pin 3L without Friction Ridges Catalog: Parts: Technic, Pin  47994  Technic, Pin Double Triangle 1 x 3 with 2 Clips with Round Pin Holes Catalog: Parts: Technic, Pin  47972  Technic, Pin Double Triangle 1 x 3 with Tow Ball Catalog: Parts: Technic, Pin  32138  Technic, Pin Double with Axle Hole Catalog: Parts: Technic, Pin  6628  Technic, Pin with Friction Ridges and Tow Ball (Undetermined Type) Catalog: Parts: Technic, Pin  3673  Technic, Pin without Friction Ridges Catalog: Parts: Technic, Pin