Air Conditioning Accessory -5 Pieces Pneumatic Muffler Muffler Air Flow Speed Controller 1 Inch Flat Head Highlights Generic Brand 5 Piece Pneumatic Muffler Muffler Air Flow Speed Controller 1 Inch Flat Head Description: Mufflers / Silencers are used to reduce dynamic noise from pneumatic components or device exhaust. Easy installation and high nose reduction result, fast and reliable connections Used with: Cylinders, valves, crankcases, gearboxes, oil tanks, reservoirs, air tools. Filtering exhaust gases and intake air of dirt and potential foreign particles, thus extending the life of the valve. Silent noise during pressure equalization. Noise Reduction Effect: More than 20dB Specification: Materials: Brass Size Chart: 4 Inch Flat Head - Thread Outer Diameter: Approx. 20.8mm (G1/2) Key Length: Approx.21mm Whole Length: Approx . 14mm 3 inch flat head - Thread outer diameter: approx. 16.5mm (G3/8) Wrench length: approx. 18mm Whole length: Approx. 15mm 2 Inch Flat Head - Thread Outer Diameter: Approx.12.8mm (G1/4) Wrench Length: Approx. 15mm Whole Length: Approx. 15mm 1 Inch Flat Head - Thread Outer Diameter: Approx. 9.6mm (G1/8) Wrench Length: Approx.12mm Whole Length: Approx. 13mm 4 inch long head - Thread outer diameter: approx. 20.8mm (G1/2) Wrench length: approx.22mm Whole length: Approx. 41mm 3 inch long head - Thread outer diameter: approx. 16.5mm (G3/8) Wrench length: approx. 18mm Whole length: Approx. 36.5mm 2 inch long head - Thread outer diameter: Approx.12.8mm (G1/4) Wrench length: approx. 15mm Whole length: Approx. 29mm 1 inch long head - Thread outer diameter: approx. 9.6mm (G1/8) Wrench length: Approx.12mm Whole length: Approx. 25mm Package Include: 5Pieces Muffler Airflow Speed Controller