An Allett verticutter cartridge 'vertically' cuts your lawn. The thin, closely spaced tines remove any lateral growth and moss allowing the lawn a healthier growth rate and pattern. This Allett 20 inch Verticut cartridge is part of the Allet lawncare and quick change system. The 20 inch diameter verticut cartridge is suitable for the Allett Kensington 20K cylinder lawn mower.