Amazon.com: UNISTRUT Genuine P2950-EG 4 Wheel Trolley Assembly for use with P1000, P1001, P5000, P5001, P5500, P5501 and All 1-5/8" or Taller Strut Channel : Industrial & Scientific
Heavy Duty Wheel Trolley for 1-5/8" UniStrut Channel Punching Bag Garage Hoist | eBay
Amazon.com: Newhouse Electric 4 Wheel Eye Loop Trolley Assembly for use with for use with All 1-5/8" or Taller Strut Channel, Unistrut, Superstrut : Industrial & Scientific
Strut Channel - Grainger Industrial Supply
Amazon.com: 8 Wheel Trolley Assembly,for 1-5/8" Wide and All 1-5/8" or Taller Strut Channel,Load 1200 Pounds,Stainless Steel : Industrial & Scientific
DYI hoist for truck cap | Nissan Frontier Forum
Superstrut by ABB - TR294 - Four Wheel, Bearing Trolley Assembly. Frictionless Needle Bearings. load 1000lb - RS