Base Mount Part C7 Mirror Mount Base Compatible with Ball Size 1 inch [REC-MOUNT25] (C Part) M8-M10 [RM25-C7] (25.0mm-25.4mm)

Please be sure to read the product description (this is the detailed part). If you are using a computer, please click "See more". The ball size of this product is approximately 25mm. Remove the mirror and insert it between the mirrors. *A separate mirror adapter may be required (for scooters, etc.) Compatible with mirrors with thread diameters of M8 or M10. *M8 adapter included Base mount material: 6061 aluminum