I purchased these new to attach a bicycle drink cage and carrier. 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 head. Please refer to the photos for details, as this is a rough measurement. Although they are new and unused, please understand that these are being sold as used items. Please note that this item is not subject to discounts. Shipping will be in a bubble-wrapped envelope.