1ADVANTAGES: It is one of the best premium unresponsive yo yos with powerful rotation, excellent stability, and great performance ability.2HIGH PERFORMANCE: Premium unresponsive yo yo has a stable and balanced high speed program. Super smooth sandblasting treatment, the surface never fades and is not easily scratched.3ALUMINUM ALLOY: Aluminum metal yo yo, metal ball shell and stainless steel bearings to enhance the shock resistance and fall resistance of aluminum yo yo.4TRAINING ABILITY: Advanced play requires constant training. Training unresponsive yo yo can exercise one's physical coordination, develop children's perseverance and patience, and improve communication skills.5IDEAL GIFT: This alloy yo yo is very professional and is the perfect gift for kids, family and friends. Recommended for children's daily practice or competition use.