Makerbeam Openbeam T Bracket (Pack of 12pcs) Pack of 12 stainless steel T brackets designed for MakerBeam (10x10mm in diameter). MakerBeam T brackets can be combined with MakerBeamXL and OpenBeam (both 15x15mm in diameter). All MakerBeam elements can be combined and reused (no welding required) enabling shorter design and assembly times MakerBeam enables professional prototyping and provides mechanics for any electronics project.