Sure Ground Silicone Cleaning Stopper Plug SG 19

Sure Ground Silicone Cleaning Stopper Plug SG 19Product description: On the road or just for storage: With this safe ground plug made of silicone, you can close every bong with a safely grounded SG 19. It is perfect for cleaning the bong as no water can run out.   For SG 19 (18.8 mm)