The is a pneumatic device, which can effectively help reduce the dynamic noise of pneumatic components or equipment . This is a very convenient and practical tool. It is made of materials, safe and , and can serve you. The reasonable design makes it possible to control the movement of the cylinder by adjusting the speeds, so as to achieve better results. It is a very effective practical electromagnetic . Features -Color: Golden. -Material: Brass. -Size: About 3.80X2.30X2.30cm/1.49X0.90X0.90inch. -Specifications: 1/8; 1/4; 3/8; 1/2. -These compact and practical mufflers are easy to install and maintain and are good pneumatic mufflers. - a device that prevents sound transmission and allows airflow to pass, so it can help you reduce noise well. -The the propagation of sound waves and let the air flow through. It is an effective noise control tool. -Pneumatic can play a very good protective role, avoid dust and other infringements, and extend the service life of pneumatic equipment. -Made of brass material, , efficient, practical and , it will bring you a good experience. Package list: 4 x mufflers