Waterproof shark fin antenna made from ABS plastic. Coated in piano paint and available in multiple colors. Features a 3M adhesive for secure attachment. The bottom hole measures 9.8 x 5.2 cm; ensure your antenna base is smaller for proper fit. For larger bases, consider a compatible model designed for bigger installations. Includes PET-S antenna cable for improved signal strength. Comes with a color-matched silica gel ring: white and pearl white include white ring; silver includes silver ring; gray and dark gray include gray ring; light red and deep red include red ring; all other colors include black ring. Made of high-gloss, non-fading, durable ABS plastic. Package includes: 1 shark fin antenna, 1 PET-S antenna cable, 1 3M adhesive pad, 1 pair of copper screw and nut. Easy installation: attach the 3M adhesive to the bottom of the shark fin, remove the original antenna, secure the screw and nut onto the existing base, align the shark fin properly, and press firmly for 2 minutes to ensure strong adhesion. Dimensions: shark fin length 16.4 cm (6.5 inch), width 7.9 cm (3.1 inch), height 6.7 cm (2.6 inch). Bottom hole length 9.8 cm (3.9 inch), width 5.2 cm (2 inch). Product photos shown are for packaging and reference.