Square Tubing for Square Drinker Cup₱30.00PriceType*SelectMore InfoFeaturesSquare Pipe for Square tube Nipple Drinker CupCan be used with the screw type nipple drinker Length: 4mInside Dimensions: 22mm x 22mmEach pipe have 8 holes space out evenly to accommodate screw type nipple drinkers Country of OriginChina