Features: 1. Designed according to the basic principles of a golf swing, this golf training bag helps players master the correct feel for swinging the ball. It can quickly correct a right hook, enabling players to master the shot correctly. 2. To install, slide the rod sleeve from the rod head towards the grip. Align the laser from the lower part with the bayonet opening and push upwards. Once installed, adjust the sight left and right until the laser line is perpendicular to the rod head at a 90-degree angle. Then, it is ready to use. 3. Powered by 3 x LR44 button cell batteries. In "INT - Intermittent" mode, the light beam lasts for only 10 seconds, which is a power-saving mode. In "CON" switch mode, the light will continuously emit until the voltage is low. 4. Easily fits any golf club. Its small size makes it easy to carry. This lightweight plastic golf putter adds minimal weight to your golf club. Specification: * Material: ABS * Color: Black * Size: 5 x 2 inches * Weight: 100 g Package Includes: * 1x Golf Training Putter