1. Material: zinc alloy 2. Process: electroplating 3. Dimensions: 8.3 x 3.5 cm 4. Net weight: 30g/piece 5. Lightweight and easy to store 6. Comfortable hand feeling, rebound in seconds after strong pressing 7. Double ring design, more practical 8. High-quality zinc alloy, anti-corrosion, wear-resistant and not easy to fade
