General description Durable metal construction ensures these air compressor mufflers are sturdy and long-lasting. They effectively work with air compressors to block dust and moisture while significantly reducing operating noise. Technical specifications Size: 76mm x 60mm Male Thread Diameter: 20mm Male Thread Size: 1/2 inch Application Oil-free air compressors Blowers Boilers Exhaust ports Generators Package Content Includes 2 pieces of 1/2 inch air compressor intake filters