I finished topping the tree with a Fiskars pole saw, but the trunk was dinner plate diameter. A bit much for the saw in the PowerLock. On the other hand, it was easily cut by my Tanaka chainsaw. I like Japanese chainsaws. They are fast, fast, fast, and Tanaka (same parent company that makes Makita power tools) has the best consumer warranty going. 5 years coverage for homeowner use. I bought the saw for processing Oak for my smoker grill. I haven't bought charcoal since 2005 because I keep getting free Oak whenever we get a storm or the neighbors trim their trees and I just have to cut it into small enough pieces.