Item Type: Sound Golf Swing Trainer Material: Rubber Grip+Aluminium Alloy Shaft Shaft Length: Approx. 48cm/18.9in Inner Diameter: Approx. 1.1cm/0.4in Function: It is another sound-guided equipment besides the ribbon stick; the focus of his altimeter is to assist students to perform the high-cutting action at the correct angle; in other words, only the swinging whistle is held to the correct angle ( When it is L-shaped), the whistle will make a sound; it triggers the feeling of conquering the whistle of the students Package List 1 x Sound Golf Swing Trainer 1It can assist students to perform high-cutting movements at the correct angle to achieve the purpose of training. 2The whistle will make a sound when the whistle is swung to the correct angle (in an L shape). 3The aluminum alloy shaft is sturdy and durable, not easy to damage, and has a long service life. 4The rubber grip is more comfortable and will not be tired even if you hold it for a long time. 5The shaft length is 48cm/18.9in and the inner diameter is 1.1cm/0.4in, which is made to meet your needs.