The Heavy Duty Butterfly Sprinkler from Holman is a tough & robust butterfly sprinkler that is built for harsh environments and along with great reliability, this sprinkler offers trouble-free operation. To install, simply screw the sprinkler into a sprinkler base, riser tube or hose end spike to attach. The O-ring seal makes installation quick & simple, eliminating the need for messing around with any teflon seal tape. The maximum spray radius is equal to 4 metres long. Great for covering all types of gardens & landscapes.