1. Rubber well nut with threaded brass insertThese rubber nuts are designed with a threaded brass insert for a secure and reliable connection. 2. electrical isolation and vibration resistanceThe rubber well nuts provide electrical isolation and effectively dampen vibrations, maintaining stability and reducing noise during motorcycle rides. 3. Easy installation without special toolsNo need for special tools or complicated procedures. Insert the well nut into the hole, tighten the bolt, and the sleeve expands to create a secure fit. 4. Wide clamping range for various applicationsThese rubber nuts can be used with metric bolts of different sizes. With a clamping range that accommodates a variety of materials, from thin to thick, they are suitable for windshields, bodywork, and other motorcycle applications. Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement.