Genuine Unistrut P2950-EG 4 Wheel Trolley Assembly for use with P1000, P1001, P5000, P5001, P5500, P5501 and All 1-5/8 or Taller Strut Channel by UNISTRUT : Amazon.ca: Industrial & Scientific
Aluminum Unistrut Channel
10 Pcs M12 304 Stainless Steel Strut Spring Channel Nuts for Unistrut Channels | Walmart Canada