The Makita UC4051A is the extended version of the UC4030A. In addition to the power of no less than 2000 watts, this model also offers an oil level indicator. That way you know exactly when to top up the oil again. Moreover, you can adjust the chain without using tools and replace the sword. The slip clutch and motor and chain brake ensure optimum safety. The Makita UC4051A also offers transport protection for safe and easy transport.