Vent Window Visor Shade Rain Guards for 99 00 01 02 03 04 05 06 Silverado Sierra Crew Cab , 00 01 02 03 04 05 06 Suburban, 02 03 04 05 06 Avalanche Escalade EXT ESV, 00 01 02 03 04 05 06 Yukon XL Tape on outside style, sold as set of 4 After-market product, generic brand No drill required and easily installed in seconds Installation method using 3M adhesive tape (Included)