Mirror Features: Super sized mirror at 7" x 12" Heavy duty mirror head body moulded out of thick ABS plastic. Mirror face made of durable, thick glass. Designed for on or off road use. Mirror is slightly convex to give you a broad viewing area without distortion. Mirror post allows for adjustment in all directions. Mirror post mounts to round or square tubing from 1/2" to 1 1/8" in diameter. Most tractors are 3/4" or 7/8" so we have you covered. Mirror post tightens easily with two allen head bolts. Mirror post is off set mounted to make this mirror head versatile for multiple applications. Be sure to check for clearance.