Great value for money, sturdy construction, spare blade and handy carry bag. Cut through 10cm thick branches in seconds, so imagine 20cm branches would be easily achievable. I only used 4 extension poles as thats all i required, but imagine that using the full 8m would be a bit of a work out, for me anyway. The hooks on either end of the blade prevent it from slipping off a branch when cutting which is a good design. As when cutting wood generally, let the blade cut the wood do not force it. I've cut 30 branches so far and the blade us still cutting like new. Well worth the money in my opinion, great addition to any tree cutting tool collection.