Image Item No. Description By  89651  Technic, Axle and Pin Connector 2 x 7 with 2 Ball Joint Sockets, Squared Ends, Open Side Axle Holes Catalog: Parts: Technic, Connector 4  10288  Technic, Axle and Pin Connector Triple Catalog: Parts: Technic, Connector 1  87408  Technic, Pin Connector Toggle Joint Smooth Double with Axle and Pin Holes Catalog: Parts: Technic, Connector 2