Punching-ball Sport-Thieme "Power Spin": improve your boxing technique / The Sport-Thieme "Power Spin" punching-ball is a piece of boxing equipment with a padded arm for extra arm and leg work. Its base can be filled with water or sand. The punching bag itself is attached to a spring that ensures rapid, precise oscillation. This device trains technique, including avoidance, speed, reaction and coordination. The height of the rod can be adjusted to suit the user's stature / / Detailed specifications: / - Height adjustable from 156 to 196 cm / - Dimensions of PU ball: 21x28 cm / - Dimensions of polyethylene base: 50x50 cm / - Weight unfilled: 10.5 kg / - Weight filled with water: 57 kg / - Color: black