2 Pack Unistrut Trolley Limit Blocks 1-5/8″ Strut Channel Roller Stop Hardware
It provides a secure stopping solution for roller trolleys used in garage doors, hoists, beam trolleys, and other strut channel applications. Product Type: Trolley Limit Block Hardware. 2 × Trolley Limit Blocks.
15/8 Inch Trolley Limit Hardware Strut Channel U Bracket Rollers 2 Pack Set
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. Easy to Install: The function of the limiter can be realized by only tightening the nut.