Image Item No. Description By  26287  Technic, Axle Connector 3L Catalog: Parts: Technic, Connector 2  98585  Technic, Axle Connector Block Round with 2 Pin Holes and 3 Axle Holes (Hero Factory Weapon Barrel) Catalog: Parts: Technic, Connector 2  44809  Technic, Pin Connector Perpendicular 2 x 2 Bent Catalog: Parts: Technic, Connector 2  32557  Technic, Pin Connector Perpendicular Double 3L Catalog: Parts: Technic, Connector 2