Due to many requests for Prius compatibility with this grip, we've manufactured it by adding a helicoil to the M6 thread, which was previously impossible due to the Φ6 opening. This is a Mac Tools driver grip (DG11) with a tapped M6 P1.00mm thread. Please select one color from the five colors in the second photo and specify your choice via the transaction email. (Black, Green, Red, Yellow, Orange) The fourth photo shows three different M6 type Mac grips that I have for sale. I also have KTC grips for sale. When installing, please completely remove any thread lock adhesive from the male threads on the vehicle. The height of the grip is approximately 90mm. If purchasing multiple items, please use the bulk purchase feature. You will receive a discount of ¥100 per item. We can accommodate changes to thread diameters such as M10 and M12. We can also accommodate limited edition color processing. (Please inquire via the question function) Other colors and dimensions are also available. We also sell Mac Tools grip keychains that can be attached to cars and motorcycles. Please see "Products from this seller" for more details. We generally do not accept price negotiations.