Electric Hoist Installation Roller, Wheel Trolley for use with 1-5/8" Wide and All 1-5/8" or Taller Strut Channel (2Pack)

?Product model?Applicable to all channel with 1-5/8" width and 1-5/8" thickness or thicker, compatible with unistrut P1000, P1001, P5000, P5001, P5500, P5501. ?Product Type?Our roller trolley assembly is made using highs strength solid steel that’s impact resistant and zinc galvanized to offer protection against rust and corrosion. It features a solid bearing steel pin shaft in the strut channel as well ?Product compatibility?Weight - 2.94lb, Radius - 1/4inch. Design load - 1800lbs. Compatible with PA400 to PA1000 electric hoist.