Forklift Boom - Our Econo-Boom Forklift Boom Model WR-LM-EBT offers unique performance, convenience and safety features are built into every Lift Master Boom. Our Forklift Booms are fabricated from structural steel with welding to meet AWS creates a rugged and durable boom that will provide long term service. Fork Truck Boom Telescopic units extend to 144" and come with an infinitely adjustable locking screw (except orbit booms which features a spring loaded detent). Fork pockets for 4,000 pound capacity models measure 7-1/2"W x 2-1/2"H usable on 24" centers. Usable fork pockets are 7-1/4"W x 2-1/4"H for 6,000 and 8,000 pound capacity options. A 36" safety restraint secures the fork lift boom to the fork for safe operation. Each forklift boom attachment includes two lifting hooks.