Set of Gil Marine polished stainless steel exhaust muffler tips. This set of tips are 6" diameter on the outside of the boat and accept 4" exhaust hose on the inside of the boat. Requires 4" hole in boat. 5" long outside of boat, 4" long behind flange. These muffler tips are designed for lower horsepower applications, 450 HP and below. Fresh re-polish, look great. Sold as a pair.