1. Material: aluminum alloy 2. Simple and detachable assembly design, high-strength nylon gasket, wear-resistant and compression-resistant without scratching metal parts 3. The frame bayonet design prevents the seat tube from slipping off 4. 2mm hexagon socket head set screw, strengthen the fixed seat tube 5. Arm lengthening design, light and labor-saving use 6. Widened and thickened seat tube clamp, firm and wear-resistant, prolonging service life 7. Weight: 39.8mm 63g; 40.8mm 67g 8. Dimensions: 73.5x46x12.6mm
