Shakespeare's Style 4189 Rail Mount is designed for quick and easy installation on 7/8" and 1" vertical or horizontal rails.  A steel band wraps around and grips the rail, and the convenient handle tightens the grip to support the antenna.  A rotating connection at the rail permits the antenna to be positioned vertically, compensating for a slanting rail.

• 9/32" hole for cable feed-through
• Standard 1" - 14 thread
• Handles antennas up to 8' length
• Glass filled white nylon construction
• No holes to drill