Sight window Spool 6” with 1.5” Tri clamp

6” tri clamp top and bottom 4” spool  Has 2 x 1.5” tri clamp side ports  Designed as a material column extension to add sight windows to your top or bottom to your columns. Your boy Bissy Bee has one similar listed now for $1600? Yes with 2 $100 sight windows and some clamps. Stainless steel  Ships from Sebastopol Ca 95472  USPS priority mail,  Closed loop extraction, closed loop extractor, Rayotek, tri clamp sight window, tri clamp sight glass,