Diameter: Approximately 7mm to 9mm, Width: Approximately 5mm to 7mm, Hole Diameter: Approximately 2mm to 4mm. *Due to the nature of the product, the color may slightly differ from the photos, and there may be variations in size and hole diameter. Please be aware of this. Final decisions are based on the images provided. Returns are not accepted for discounted items. Thank you for your understanding.