These lightweight tips are hard coat anodized, and have pressure/flow charts laser engraved on each tip. Orifice openings are 1-1/4, 1-1/8", and 1" (32mm, 28mm and 25mm). Use with valved playpipe H-2VPP for compliance with NFPA 1901 equipment requirements. Each tip is threaded 1.5" NH (38mm).