XUEMEI Application This motorcycle helmet horn is very suitable for all motorcycle helmets, durable, weatherproof. Fashionable and exquisite, it is a great artifact to enhance the appearance of your motorcycle, cool and with a sense.Stable and reliable This motorcycle helmet horn is an excellent motorcycle accessory with high quality and guaranteed quality. You deserve it, hurry and bring it home.High-quality materials This motorcycle helmet horn is made of high-quality materials and is very suitable for your original car. Don't hesitate anymore.1. If you are worried that the suction cup is not strong, you can stick a small piece of double sided tape in the most concave part of the suction cup for reinforcement one by one2. If you are worried that the suction cup and devil horns are not strong enough, you can also use double-sided tape or stick it on3. The suction cup can only absorb flat and smooth surfaces. For dull helmets or gaps, only double-sided adhesive tape can be used for gluing