Direct replacement for H-D models. Die-cast aluminum construction with ECE approval. A machined stainless steel ball and nylon socket provide smooth pivoting for easy adjustability and robust positioning. Mirror head dimensions: 5-1/2" (14cm) wide x 3-1/2" (8.9cm) high. Mirror stem provides 4-1/2" (11.4cm) offset and 3" (7.6cm) rise from mounting position. 5/16-18 internal thread. Note: XG 500/750 Street requires adapters for installation.