Andustrial 4 Bearing Trolley Assembly - Electro-Galvanized Zinc Finish - 3-in Square - Compatible with All 1-5/8-in or Taller Strut Channels | TWPS104
Superstrut® TR294 | McNaughton-McKay
Electric 4 Wheel Trolley Assembly for Taller Strut Channel for 1-5/8" Wide All Unistrut 1-5/8" 4 Wheel T Trolley Assembly Roller Stable Trolley Silent ...
Unistrut Trolley System Offers Support to Varying Load Capacities