PB30T8 8" Bolt HD SQ Trolley - Offset Bolt

PB30T8 8" Bolt HD SQ Trolley For 3.5" overhead industrial use up to 600lbs. (Weight distributed between both trolleys.) Heavy Duty long life trolley bearings and plated with a gold zinc finish. Offset bolt, steel, ball bearing allows for easy horizontal adjustment of door placement. Simply turn offset bolt into desired position and then fix lock washer to steel header.