Eliminates need to offset raceway when connecting to surface type panel boxes. Adjustment from surface to center of bushings is 5/8" (15.9mm) minimum to 1 3/8" (35mm) maximum. When used as adjustable offset connector break out metal between the two holes. When used with 700 Series Raceway break out crescent twistout in cover. 1/2" trade size chase nipple and HICknut furnished.