Check the listing for details. Hi Flame 4 Wheel Light Duty Trolley Assembly for All 1-5/8" or Taller Strut C.... Condition: New. Listed at 67.49 USD. Brand New Hi Flame 4 Wheel Light Duty Trolley Assembly for All 1-5/8" or Taller Strut Channel Set of 4 Manufacturer model: 4WU-4 Each 4 wheel trolley assembly offers 600 lbs weight support. Our roller trolley assembly is made using highs strength steel that's impact resistant.Clevis Material: 12 Gauge, For use with All 1-5/8" or Taller Strut ChannelIt uses deep groove ball bearings to make sure you can operate it smoothly without making noise. Zinc galvanized to offer protection against rust and corrosion, to provide smooth opening/closing even in the long term.The strut channel trolley roller standard deep groove ball bearing mounting, for use with 1-5/8" Wide and All 1-5/8" or Taller Strut Channel, Designed with three screw holes in 1/4 inch thick steel plate, recommended to use M7 bolts. Can be installed ceiling trolley system or electric lift at will, easy to operate.For use with: SC12-2-EG, SC12-4-EG, SC14-2-EG, SC12-10-EG, P1000, P1001, P5000, P5001, P5500, P5501 and All 1-5/8" or Taller Strut Channel Description 4 Wheel Trolley Assembly For use with All 1-5/8" or Taller Strut Channel, Silver Finish: Electro-Galvanized Zinc. Shipping and Handling Please allow 5-7 business days for the package to arrive, regardless of buyer location within the US. We will provide an online tracking number to you once the item has been shipped. It may take a few business days for our automated system to process the tracking number onto eBay. However, this will not affect the shipping times. Return Policy All our products are brand new and sealed. All items qualify for returns within 30 days of receipt. Feedback We take our reputation seriously. If you have any questions or concerns, please contact us and we will respond back to your message within 24 hours.