Pypes Exhaust (EVT407) 4" In x 7" Out x 18" Long Polished Stainless Steel Weld-On Exhaust Tip Brand new from Pypes Exhaust 4" inner and 7" outer diameter; 18" long For trucks with 4" exhaust piping Made from show polished T304 stainless steel Now a clamp-on tip; Clamp is built onto end of tip and tightens down to instal