Heavy Disc Trailed Disc Harrow: These are being manufactured from 16 to 34 discs as fixed chassis. It has more model alternatives such as 22 cm of disc spaces ,560 mm – 610 mm – 660 mm of disc diameters, plain and notched type of discs. These alternatives enable to farmers for choosing the most suitable equipment for their own conditions. The disc direction angle that can be opened to 22 degree gets good soil working and also desired working depth. 2 pieces of land type of tyres with the size 11.5/8-15.3 are used for each machines. It is absolutely a suitable equipment for diminished soil working and minimum soil working .