Features The hole distance is 8mm, the diameter of the large hole is 8.1mm and the diameter of the small hole is 3.8mm. Made of high quality metal which is resistant to rust and corrosion. Similar to the tee beam connector this internal connector is used to join a beam end to a beam side at a 90-degree angle. Compatible with TETRIX PRIME. Made of metal; requires quick rivets and pegs and a thumbscrew (all sold separately). Package List: 2 x Connector   Note: 1. Please allow slight error due to manual measurement. Thanks for your understanding. 2. Monitors are not calibrated same, item color displayed in photos may be showing slightly different from the real object. Please take the real one as standard. Specification: Condition: 100% Brand New Item Type: Beam End Connector Material: Metal Color: Black Quantity: 2PCS Size: Approx. 16 x 16 x 36mm / 0.6 x 0.6 x 1.4in Note: Threaded for 6-32 screws Package List