Type 4, Long Square Tee 25x25mm

Square footplate - 25 mm. Use this clamp for positioning constructions. Do not use as a basis for supporting safety railings and the like.

Side Outlet Tee - 25 mm. 3-direction clamp used to fix uprights with 3 horizontal tubes that are perpendicular to each other. The upright tube passes through the clamp.

Crossover 90°. Crossover clamp (90°). Used for long tube intersections with uprights where decreasing cutting cost and increasing strength of the system with continuity of the tube is desired.

Hook twisted - 25 mm. Suited for making coat hangers and the like.
Suitable for square tube 25 x 25 mm

Straight Coupling. Joint clamp for tubes of the same diameter. Do not use for heavy vertical loads. Alternative clamp is Type 9 used as an internal spigot.

Female Single Socket. Often used together with other brackets, such as Type 36, 38, and 40. One part of swivel fitting, not generally used alone.