Versatile mirror clamp provides 360? rotation for mirror housing which allows wider range of installation options, including an upright or inverted position, Clamp design provides extreme clamping power, minimal interference with other accessories, and a simple installation, High grade corrosion resistant hardware for years of reliable trouble free performance, Full perimeter bezel constructed from high impact ABS for superior mirror protection, Structurally reinforced housing is extremely rigid to prevent flex and maintain form, Convex mirror suface provides wider viewing range and image stabilization, Designed to break away during impacts to prevent damage, Shatter resistant safety glass for maximum safety, Position tension adjustment bolt, 10.11" L x 9.31" W x 5.68" H, Lifetime warranty