Crystal Fountains WMD100 1" WMD Series Deck Level Stream Jet Nozzle 25 mm. This directionally adjustable clear stream nozzle is designed for applications that require flush deck level mounting such as swimming pool decks and children’s public water play areas*. It can be installed vertically or horizontally with jet angle adjustment up to 25°. The gentle slender column of water produced by the 10mm diameter opening is best used as a small to medium water feature nozzle. Recommend fine screening at pump for optimum effect (suction strainer openings = 2mm). Available with optional winter cover (WMF081) and removal key (WMF082). Made of machined cast bronze and brass.