The PE806 Wheel Tracker Set is designed for superior cleaning coverage of the hubcap wheels. This high-pressure water spray (capable of 1000psi) is directed through 6 rotating zero degree nozzles; three per side. The unit has an independent head assembly, which follows each tire independently as it passes. These heads are activated through one independent air trip treadles. Each head assembly will direct the high pressure oscillating nozzles at three different angles, to insure maximum coverage of the hubcap wheel. Each head assembly will rotate on a stainless steel rod. This unit is constructed with 304 Stainless Steel Structure. This unit offers you long life, strength and attractiveness.