Plastic Tunnel Shaped Tube Inserts, or Tunnel Shaped Plastic Tube Inserts, Tunnel Shaped Inserts for Tube, Tunnel Profile Plastic Tube Plugs, Tunnel End Caps, Half Domed Ribbed Tube Ends and Tunnel Tube Caps, all designed to Plug and Finish the ends of Tube and Box Section. We've got a number of Sizes of Plastic Plugs to choose from with a choice of finishes - although we can also produce specials subject to minimum order requirements.