1-5/8 Inch: The trolley limit blocks are used for 1-5/8" Wide and All 1-5/8" or Taller Strut Channel Double-Nut Structure: The Trolley roller limits is fixed by a thin nut and a thick nut, which has a good anti-shock and anti-vibration function Cylindrical Rubber: The rubber blocks are used to restrict the movement of trolley rollers and prevent trolley components from falling off the strut aisles; They have a good anti-shock and anti-vibration function; There is a gasket on the top and bottom of the limiting block for protecting the limiting block Easy to Install: The function of the limiter can be realized by only tightening the nut Package Included: 2 pack roller limit block
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