A branching rail needs three outlets, and this flush "T" provides them at a 90° junction in 1.5" OD tubing. Tubes slide into each outlet for flush joints, so nothing protrudes along the grip. Typical T-intersections: a wall-attached rail meeting a primary stair rail, a corridor rail branching at a room entrance, a multi-level stair splitting at a landing, or a mezzanine and catwalk meeting. Five finishes cover most settings — polished brass for a traditional rail, 304 stainless polished or satin for a modern interior, and 316 polished or satin where salt or chlorine calls for corrosion resistance. As a modest step up from the two-outlet 90° elbow, it keeps branching fittings easy to add wherever a run needs one. Note the OD won't interchange with 1.67" or 2" tubing.