Verti-Knife

A make of tractor mounted linear aerator, using discs to a depth of from 10mm to 150mm. There are two models, with a working width of either 1.6m or 2.5m. The number of discs vary according to the model and depth of setting but range from 6 to 72 discs. Disc spacing can be 35mm, 50mm, 100mm, or 300mm; it is manufactured by Redexim-Charterhouse.