The three nozzles clean and wash away the debris on the floor at a constant distance and constant speed for the ULTIMATE PROFESSIONAL CLEAN.  The roller casters keep the jets at the correct distance from the ground, making it easy to control and eliminate the risk of damaging patio grouting by holding the nozzle too close, which is easily done when just using the lance.  Fitted with a 11.6mm (1/4") male quick release to attach straight onto the end of a quick release lance or trigger gun.