The new PGP Ultra is a blockbuster of epic proportions. Ready to thrill you, this action packed feature from the award-winning Hunter Industries stars the same great lineup of the original PGP: Through-the-top adjustment, large nozzle selection, and the industry's most reliable and proven drive-train assembly. But the newcomers are what make it Ultra: * Full-circle adjustment from 50 to 360 degrees * Non-strippable drive mechanism with auto-arc return * Headed and slotted nozzle retainer screw. You can use either a Hunter wrench or a standard slotted screwdriver * Improved dirty-water tolerance on the internal gear drive.