This adjustable umbrella patterned sprayer is one of our best sellers. When planting young trees or larger perennials the wetting area can be turned down. As the plants grow, the Spectrum™ spray pattern can be enlarged up to 5 1/2 feet in radius (11' diameter). There are no moving parts to be damaged and the top can be easily removed for cleaning. The Spectrum™ on a stake comes with a break off transfer barb. All Spectrums™ have a full circle pattern.