What features and functions should I look for on a professional chipper or shredder?

•  Very powerful petrol OHV engine from around 140cc upwards, frequently from respected engine manufacturers like Briggs and Stratton

•  A large cutting capacity around from 90mm up to 200mm or more

•  Strong dual purpose mechanism – a robust flywheel with sharp, strong blades for chipping and with blades, flail hammers* (or both) for shredding 

•  Dual-purpose large and heavy-duty hopper/chute for dealing with branches and loose material

•  Heavy-duty steel construction

•  Large transport wheels with pneumatic tyres for extra traction and stability

•  Reversible blades

•  Hitch/tow bar for attaching to garden vehicles for improved mobility/versatility

•  Belt drive transmission

•  Ability to tackle any kind of waste including kitchen waste

* or a similar strong and durable cutting system.