MegaBite blade uses a high carbon SK5 steel in a tapered blade design combined with an impulse hardened 4 edge tooth that has improved tooth geometry for unmatched cutting performance and a longer cutting life. I-beam aluminum construction, In-line design and the positive locking extension system combine to give you incredible cutting stability even at full extension. Lock-back blade folds down with a touch of a finger. Folds down to just 28 inches so it’s easy to carry, easy to pack and easy to store. Extends to a full 10 foot so it can reach where many ordinary pole saws can't reach.