<B>Genuine Unistrut P2949-EG 2 Wheel Trolley Assembly for use with P1000, P1001, P5000, P5001, P5500, P5501 and All 1-5/8" or Taller Strut Channel Review</b><P>http://tinyurl.com/o5fzzv7 <P><P> Genuine Unistrut P2949-EG 2 Wheel Trolley Assembly for use with P1000, P1001, P5000, P5001, P5500, P5501 and All 1-5/8" or Taller Strut Channel <P>Genuine UNISTRUT Brand<P>2 Wheel Trolley Assembly<P>For use with: P1000, P1001, P5000, P5001, P5500, P5501 and All 1-5/8" or Taller Strut Channel<P>9/16" Diameter Hole; Thickness: 1/4" (6mm)<P>Finish: Electro-Galvanized; ASTM B633, Type III<P>