Agora nao preciso ficar mexendo no flybarThe locking tool required some modding to have it fit right as the legs where a little too long. There is two ways to fix and have it working 1) Add a heap of washers under the Button head or 2) use a Dremel and carefully remove some acrylic from the legs bottom. Only about 4-5mm was required. I chose the latter. Once this was done the tool is fixed down with the Heads button and all is perfect.Received in good condition. Good quality.nice and helpfull tool to setup the Heli. I then them in different sizes. Recommended.