uxcell 2 Pcs Black 20mm Threaded Exhaust Filter Muffler for Air Compressor Product Name : Air Compressor Filter Silencer;Material : Plastic Color : Black;Overall Size (Approx. ) : 87 x 62mm / 3.4" x 2.4" (D*H) Thread Diameter : 20mm/0.78"(1/2" PT);Hole Dia : 15mm/0.6" Net Weight : 113g Package Content : 2 x Air Compressor Filter Silencer