Specification: Product Name: Exhaust Silencer Wadding Sheet Color: White Material: glass fiber Size: 50cm wide x 100cm long Thickness: 6mm Intended Use: Replacement Part Features: -- Designed to expand on initial contact with heat to completely fill the chamber. -- This technology increase sound absorption considerably compared to traditional materials often at reduced densities thereby reducing the overall -- weight of the silencer. -- Very high quality product. Don't settle for cheap alternatives. Fitments (Please Compare The Exhaust Silencer Wadding Sheet With Your Original One Before Purchasing!): To suit most brands of silencers up to 125 mm diameter and 450 mm long. Package Included: 1 x Exhaust Silencer Wadding Sheet Note: 1. We provide clear pictures, measurements where possible. Please check as much as possible to make sure the item is the one that you need. 2. Please allow 0.5-1 inch difference due to manual measurement.(1inch=2.54cm) 3. There are no instructions included in this kit.Professional Installation Is Highly Recommended!