Material Handling Products By YUEBM

• It is a part of the trolley system,Package includes two trollys,Each trolly has 4 rollers,and actually these are steels and they've got steel ball bearings in them,strong and roll smooth
• Made of solid steel,high quality and heavy duty,440-pound load rating,the bolt is removable and 360 rotate
• Used with box rail track to carry some heavy objects that need to be moved, especially suitable for making sliding garden fence,curtain style garage doors,sliding heavy Barn or outdoor shed sliding doors
• For use with (inside diameter) dimensions: 2 1/4\" H. x 1 3/4 \" W.or Taller Strut Channel,Not applicable to 1-5/8\" Strut Channel
• Fixed mode:welding positioning(For Metal, stronger) or Bolt deep buried positioning(For Wood, strong enough)