Type 77 – Plastic Plug admin | August 9, 2020 A grey plastic plug to fit open ended tubes. See also Type 84. Suitable for medium and heavy guage tubing only. Add to quote Categories: All Products, Fitting, Klamp, Miscellaneous Description Description Related products Type 29 – 30° to 60° Single Socket Tee KLAMP GALVANISED FITTINGS Type 99 – Allen Wrench Type 84 – Drive In Plug