1. Material: plastic 2. Reinforced plastic chuck, easy to use, one-key opening and closing 3. High-end chuck can better lock the OB lever 4. The plastic safety buckle of the barbell bar is suitable for standard Olympic bars with an inner diameter of 2 inches; 5. Fast lock to buckle the bell piece, not easy to slide, safe weightlifting bench press 6. Weight: 150 grams 7. Size: 20mm; 30mm
