These are very will made drinkers and you will be quite pleased with them. The extra strong plastic, built in handles allow you to carry them with your whole hand, not just a few fingers. The two sections twist together and lock in place. With the handle in the top position, the birds can not roost on the drinker.We have the larger sizes that you will be glad to have when you are going to be unable to water them for a few days. These drinkers work well with our flat plastic heaters. Easy Carry Drinker 1/2 Gallon