Training Club Total length: approximately 66cm, weight: approximately 1kg (983g) It's heavy and short, so it's good for swing practice indoors (please do so at your own risk to avoid breaking lights, walls, etc.). Also, the grip is designed to allow for the correct grip. You can also hit a ball normally (I haven't done it). The swing checker is from another company. Images 11 and 12 show the explanation and how to use it. It's designed to be attached snugly to the left arm for checking. It's written that you shouldn't actually hit a ball with it (the actual swing speed is fast, and it will detach from the arm). Also, when attaching it to the grip, be careful not to tighten it too much, as it will dig in and become tattered like in image 7. This is a used item, so there are signs of use and scratches. Please refrain from purchasing if you are sensitive to these, and consider carefully.