Mayhew Steel Products 32028 5 Pc Air Exhaust Pipe And Muffler Set Standard .401 turn type parker shank for air guns.Fully hardened and tempered shock resistant tool steel.Black oxide finish to prevent corrosion.Set includes the following:OD Pipe Cutter x 8-1/4″, Pipe Remover x 8-1/4″, 3/8″ NutSplitter 3/4″ x 6″, Pipe Cutoff x 7-1/2″, ID Pipe Cutter x 8-1/4″Made in the USA.