Hello am am into cages installer and people don't believed that using old method to give layers water will only make your production be ustable becouse layers eat a lot and drink a lot too ,the old method of drink can only allow birds to drink little but not to satisfy...we convert local method to latest nipple drinker ,we also selling nipple and saddle for pipe and complete finishing drinker like this.....email me on topeolugesin@yahoo.com or call me 08058092484 or 07069731211