Specifications: Color: Red Screw Size: 11/32" Pilot Hole Drill Bit Size: 5/16" NPT (National Pipe Thread Taper): 1/8" 360 degree stainless steel nipple Weight: 8.5 grams per assembled nipple 1Use drill 11/32 drill a hole at PVC pipe, or other container that can be used for your feeding of your chicken, usually please use Low RPM with drill according to the thickness of your material. If 11/32" is not suitable, we suggest you can try using drill bit size 5/16. 2Screwed the nipple drinker into the hole. Water nipples only work under low pressure (5.5 psi or less). Do not connect directly to a garden hose (house water pressure is around 30 to 75 psi). If you want to have it connected directly to a garden hose then a water pressure regulator is required. usually 2-3 chicken can share one nipple drinker(for the first time your Chicken or bird use this nipple drinker please pay attention to those lazy Chicken, may be thirst, to show then how to use the nipple drinker, because Chicken and birds has very good imitation ability, they can very easy to used to it). Clean water: direct drinking for Chicken from nipple drinker, No spilling and soaking, like the original container style drinker, to make sure chicken can get clean, fresh water, this can avoid some diseases. Save labor: connect with PVC pipe or water container, do not need check the water condition very often, just need make sure PVC pipe connect with water or the water container have water. Easy for Chicken use it: bright red design, attract to birds or chicken and the nipple drinker dispense a drip of water whenever they are pecked, this also can avoid some disease for chicken with playing. Nipple style waterer had been typically used by professional chicken farmers for many years due to many outstanding reasons. No more poop in water. No spilling and soaking the nesting material so the chickens can get nature gravity fed by fresh, clean water without diseases. More and more backyard chicken farmers come to agree to freely DIY or home made their own nipple waterer system by their chicken numbers. Because it is easy and quick to build. Save money and save time of looking after chickens. Even leave town for the weekend without worrying about the flock. Screw in style chicken waterer nipples. Each unit has a 360 degree stainless steel nipple head that will work from any angle. Good structure design---removable lower parts for easy cleaning. Item is easy to install in PVC pipe, a five gallon pail bucket or container. Just simply screw in to your drilled hole. No experience necessary. Red color design attracts fowl to find them fast to use, whether they are a day old or 5 years old. Exactly works great for broilers, layers, breeders, pullets, chicks, ducks and other game birds. They all love your waterer nipples. New Item Note: Please allow minor deviation due to manual measurement. Due to the difference between different monitors, the picture may not reflect the actual color of the item. Package Included: 10/20/100 x Chicken Water Nipples