Description: 【Durability Stainless Steel】: Constructed entirely from quality stainless steel, this muffler offers exceptional resistance to high temperatures and corrosions 【Engineered Fit】: Specifically optimized for 23CC-35CC gas engines, this is designed to perfectly match the exhaust tuning systems of model boats and RC cars, ensuring enhanced performance 【Compact Size】:  RC Boat Muffler Measuring 10.6 cm x 3.6 cm/4.17 inch x 1.42 inch, this is easy to install on most Gas RC Boat 【Noise Reduction】: Features an advanced sound absorbing cotton structure (not a hollow straight pipe) that effectively transforms sharps engine noise into a deeper, richer tone for more pleasant sound experience 【Package】: You will receive 1x RC Boat Muffler Specification: Material: Stainless Steel Size Chart: 10.6cmx3.6cm/4.17inchx1.42inch Package Includes: 1x RC Boat Muffler Note: 1.This is not infant toy , please take away from children to avoid eating. 2.Please allow slightly errors 1-2cm/0.39-0.79inch differences due to manual measurement.