ITEM NAME:Fantastic 10X Push Nipple Cup Poultry Chicken Bird Quail Drinker Waterer KQ JC,a Brand new and high quality. Make a hole using 11/32" drill bit at the bottom of PVC, bucket or other containers you find available. For use on thin plastic like re-used water bottle cap, 5/16" drill bit might be more apropriate. Wind some thread tape and then Screw the nipple into the hole. 1 nipple for 2-3 birds. Water nipples only work under low pressure ( 5.5 psi or less ). Do not conect 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 reguator is required. Size:4.5cm - 1.77inch. Package Included: 10 pcs x Water Nipples Drinkers.1 nipple for 2-3 birds. Make a hole using 11/32" drill bit at the bottom of PVC, bucket or other containers you find available. For use on thin plastic like re-used water bottle cap, 5/16" drill bit might be more apropriate.