I purchased these new to attach a drink cage and carrier to a bicycle. The bicycle in the photo is just an image, so the bicycle and drink cage are not included. Only the screws are for sale. The threaded portion of the screws is approximately 8mm, not including the screw heads. Please refer to the photos for details, as this measurement is approximate. Although they are new and unused, please understand that these are being sold as used items. Please note that the price of this item is not negotiable. Shipping will be in a bubble-wrapped envelope.