Features 1、All parts are made of metal material for better quality. 2、Fit for Tetrixrobotics and Pitsco robot. 3、This connector helps create vertical joints when space is tight. 4、The bracket can be placed face to face at the end or open side of the channel. 5、The connector is very strong when connected to both sides of the structural unit, with a hole pitch of 8mm, a large hole diameter of 8.1mm, and a small hole diameter of 3.8mm, compatible for TETRIX PRIME. Specification Item Type:Adjustable Angle Plate Bracket Hole Pitch:8mm / 0.31in Large Hole Diameter:8.1mm / 0.32in Small Hole Diameter:3.8mm / 0.15in Size:27.5 x 27.5 x 29.3mm / 1.08 x 1.08 x 1.15in Material:7005 Aluminum Package List 2 x Bracket