Powder coated cast aluminum for lightweight performance and durabilityHigh grade corrosion resistant hardware for years of reliable trouble free performanceClamp design provides extreme clamping power, minimal interference with other accessories, and a simple installationSet bolts can lock mirror into plate or be adjusted to allow for smooth movement with enough resistance for micro adjustmentLocking block and bolts lock ball stud in place to prevent unwanted movement under the roughest conditionHigh resolution laser etched graphics on powder coated cast aluminum finish won - ?t wear offShatter resistant safety glassConvex surface provides super wide viewing range with added image stabilityHigh optic glass with chrome plated backing provides superior image clarity and definition