Bayco LBC-300 Mercury Vapor Bulb Changer makes changing hard to reach light bulbs safe and easy. The LBC-300 fits any standard universal threaded pole and has an adjustable thumb screw. This tool makes the chore of changing bulbs easy as 1-2-3. Bayco provides high quality, rugged designs that stand up to the rigors of professional use. That means performance, durability and reliability are never compromised.