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. White