Barnel B777 19cm curved blade anvil ratchet pruner for assisted cutting. Maximum cutting capacity 23mm. High carbon steel non-stick blade. Strong aluminium handles with ergonomic non-slip grip and one handed lock. Weight: 195g. How to use a ratchet pruner: 1. Open pruner all the way. 2. Place pruner on the subject branch, as far into the jaw as possible. 3. Squeeze the handles together until the blade stops. 4. On the second cut you will hear a click. 5. Repeat action to complete the cut.