1. Material: aluminum alloy 2. Applicable: HG cassette flywheel tower base 3. Aluminum alloy CNC processing, high hardness, light weight 4. Adopts slot design, fits tightly with the cassette tower base, stable and will not rotate 5. Size: outer diameter 38.8mm, inner diameter 34.8mm 6. Thickness: 1mm/1.5mm/2mm/1.85mm/2.18mm/2.35mm 7. Net weight: 2.5g/2.9g/3.3g/3.2g/3.4g/3.5g 8. Note: flywheel and hub are not included, only for display
