A high-performance chainsaw for farmers, landscapers and exacting gardeners, the Italian-designed Oleo-Mac GS-520 boasts high-end features including a single-piece vibration-isolated handle; a high-capacity 51.7cc engine; and an aluminium oil-pump. It combines a two-ring piston with a forged crank so as to ensure it will take heavy-duty use in its stride; and it’s equipped automatic chain-lubrication that, so you can adapt the flow-rate to suit the job. This model weighs 5kg and comes with a 46cm guide-bar.