Add a perpendicular tube to a 1.67" OD (42.4mm) Schedule 40 pipe-handrail without a welded joint. The 818-424 Perpendicular Collar seats into the main tube end for a clean flush fit, then receives a second tube at 90° with full rotation around the main axis — so you can set the branch exactly where the layout needs it. It fits.080" Schedule 40 pipe wall. It comes in 316 stainless, Polished or Satin, for marine-grade corrosion resistance on coastal and washdown installations at the European 42.4mm standard. It pairs with the matching 1.67" round tubing, splices, and fittings in the same line, so a pipe-handrail run and its cross members come together from parts sized to fit each other.