Easy and convenient installation, no modification required Increase the look with skulls to replace any 6 mm bolts on the bike Each bolt five parts Includes 2 pieces of washers to hold the screw in place for customer specific applications Universal fit for any 6mm stud Thread diameter: . 6mm Size: about 3 x 2 x 2.5 cm/ 1.2 x 0.8 x 1 inch Material: plastic and steel Main color: black Package Contents: 1 pair license plate frame bolts Only the above package content, other products are not included. Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm. Note: 1. Please allow 1-3 mm error due to manual measurement and 1-3g weight error make sure you don't mind before ordering. 2. Due to the lighting of the photos and the difference of monitors, the pictures may not reflect the actual color of the real item. Please make sure you don't mind before ordering, thank you! About Shipping: 1.please pay attention to your delivery address such as: name, street, house number, doorbell/email without name, etc. is correct, or the order will not be delivered correctly. 2.All items will be shipped within 3 business days after the payment is received. Most times you will receive them within 8-12 days then. The specific delivery time is depend on circumstances. 3.During the shopping process, if you have any questions, please feel free to consult us, we will reply you within 24 hours Hope you have a pleasant shopping experience!