This BESTfit narrow style exhaust clamp is made of chrome plated steel, fits a 5 inch diameter pipe, designed for 2 bolts and has a straight mounting bracket. Fits Peterbilt 359 1978 thru 1987, Peterbilt 375 1988 thru 1995, Peterbilt 377 1988 thru 2000, Peterbilt 378 1988 thru 2007, Peterbilt 379 1987 thru 2007, Peterbilt 386 2006 thru 2008, Peterbilt 388 2008 thru 2008, Peterbilt 389 2008 thru 2008, Peterbilt 389 Glider 2008 thru 2008.