Image Item No. Description By  47296  Technic, Axle and Pin Connector 2 x 5 with 2 Ball Joint Sockets, Open Sides Catalog: Parts: Technic, Connector 1  6536  Technic, Axle and Pin Connector Perpendicular Catalog: Parts: Technic, Connector 1  6538  Technic, Axle Connector 2L (Ridged Undetermined Type) Catalog: Parts: Technic, Connector 1  6538b  Technic, Axle Connector 2L (Ridged with x Hole x Orientation) Catalog: Parts: Technic, Connector 1  62462  Technic, Pin Connector Round 2L with Slot (Pin Joiner Round) Catalog: Parts: Technic, Connector 3