Irritrol Titan Combo Impact Rotor, 1/2" or 3/4" Double-Weighted spray guide arm - Controls stream and prevents side splash onto buildings and walkways 5 interchangeable, color-coded MPR nozzles - Pre-installed with black 3.0 gpm nozzle (no tools needed to change nozzles) Heavy-duty, high impact case - With sturdy, reinforced ribbed design Pressure-activated wiper seal - Assures reliable pop-up and pop-down Radius reduction screw - Allows for up to 25% in-field radius reduction