Constructed from high-grade type 304 stainless steel; all parts are laser cut for precision assembly and all bearings are of the highest quality. Compatibility assured with John Deere, Jacobsen & Toro triple greens mowers. The patented “Wrenchless Height Adjuster” has become the industry benchmark for this type of application. Visible laser-etched height adjustment of 0.1mm/0.004 in increments. Wrenchless height adjuster in 0.1mm/0.004” click increments Easy adjustment ‘on-course’ Rear roller power brush (optional) There is an optional patent pending powered rear roller brush which makes for the ultimate in surface hygiene, whatever operation is being carried out. When combined with a cassette the power requirement is only a fraction of any other unit on the market.