Photo 1 of BIAXJUNY Heavy Duty Steel Trolley Roller Wheels Limit Trolley Assembly Positioning for Unistrut Strut Channel with 1-5/8" Wide and All 1-5/8" or Taller Strut Channel(Silver, 4pcs)

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Photo 1 of BIAXJUNY Heavy Duty Steel Trolley Roller Wheels Limit Trolley Assembly Positioning for Unistrut Strut Channel with 1-5/8" Wide and All 1-5/8" or Taller Strut Channel(Silver, 4pcs)Photo 2 of BIAXJUNY Heavy Duty Steel Trolley Roller Wheels Limit Trolley Assembly Positioning for Unistrut Strut Channel with 1-5/8" Wide and All 1-5/8" or Taller Strut Channel(Silver, 4pcs)