Based on the rotation direction of the practice ball at impact, it is possible to directly check the direction of the hitting ball such as SLICE, STRAIGHT, and HOOK. The height of the practice ball can be adjusted from 1 to 3 levels according to the user's convenience, so it can be used with any club. No matter how good a product is, it is useless if it is dangerous. High-strength parts are being used in WINNER SPIRIT REAL SWING 300 and we carefully check the safety of golfers. The practice ball and the connecting part are made of high-strength urethane material applied to the train wheel parts and have excellent stability. The cylinder rotating shaft has a built-in special bearing, so it is safe from impact even during strong swings and noise is minimized. Replacement of parts (Practice Ball & Support) * Spare parts like Practice Ball & Support are consumables and can be purchased separately. * The Practice Ball should be replaced periodically if it is deformed or damaged depending on the user's strength or frequency of use. * If a user accidentally hits the Practice Ball Support hard, it may be damaged. Head-up Prevention Because you can know the swing trajectory without looking at the direction the ball is flying, it gives an excellent effect in a short period of time to users suffering from head-up. Swing Posture Correction Through the swing result, the user's swing status can be identified and it can help to correct the swing posture. It helps you to maintain your own real swing rhythm as you can practice your actual swing with the minimum space required. Waist Exercise & Strength Improvement It helps improve muscle strength along with waist exercise through fun swing practice rather than boring practice.