Assemble "Infinitely Expandable" VLOCKer's! This is convenient for connecting parts, connecting two parts in parallel, or branching off to the left or right. Use the Joint T-2 with two holes and the Joint T-3 with three holes to assemble the "Infinitely Expandable" VLOCKer's by connecting more and more parts! Includes - Joint T-2 x 12 pcs - Joint T-3 x 10 pcs