3" Trolley w/"I" Attach & Hardware - 5 1/2" Drop, Part # 241052 – Jervis B. Webb Company
Amazon.com: Jervis Webb Beam Trolley With Side Guide Rollers. Heavy Duty 3/4 Ton 1,500 Pounds Capacity. Industrial Grade Conveyor Trolley for I-Beams and Chain Hoists : Industrial & Scientific
Amazon.com: Beam Trolley - Jervis Webb Unibilt Conveyor Trolley: 250 Pound Capacity per Trolley. Build Your own Monorail Conveyor. : Industrial & Scientific
Amazon.com: Beam Trolley - Super Heavy Duty 2 Ton (4,000 Pounds Capacity) Jervis Webb Industrial Grade Hand Push Conveyor Trolley for I-Beams/Chain Hoists. Industrial Grade for Production Conveyor Systems. : Industrial &
Jervis Webb Beam Trolley With Side Guide Rollers. Industrial Grade 500 Pound Capacity. Conveyor Trolley For I-Beams.