These machined alloy take offs have a 3/8 BSP male thread and are designed to screw into the Revotec aluminium hose adaptor to convert them into a t piece.
Revotec Aluminium Hose Adaptor - 30mm Outer Diameter 1/8 NPT Take Off, Silver
Revotec Aluminium Hose Adaptor - 35mm, M12 x 1.5, Silver
Revotec Duct Hose Joining Collars - 90mm ID x 50mm Long
Revotec Air Hose Reducers (2 Step) - 76 - 63mm, Silver
Revotec Flexible Ducting Hose - 80mm Bore Brown
ICH 30510 Adaptor Hose Barb to Parallel Int. Thread 12mm G3/8 60 b...