The Dori 38BS is a petrol driven lawn scarifier with a 3.5HP Briggs & Stratton engine. The 38BS has 16 fixed steel knives which give a 15 inch scarifying width. This Dori scarifier also features a 40 litre collector, folding handle & micro height adjustment for precise depth control. Specifications: Engine: 3.5HP 4 stroke Briggs & Stratton engine Belt drive with jockey pulley clutch Steel constuction 16 fixed steel knives 15" scarifying width 40 litre 'thatch catcher' included Manufacturer's 12 month warranty