1,[4PCS IN 1 SET] Including 4pcs pneumatic muffler, sufficient in quantity, can be used and replaced at any time. 2,[COMPACT SIZES] These mufflers are small and simple in structure, especially suitable for places with limited space. 3,[HIGH EFFICIENCY] With excellent noise reduction and filtering effects under dry conditions, and has strong practicability. 4,[EXCELLENT MATERIAL] Made of excellent copper and ABS materials, it can be used in high temperature and high pressure environments. 5,[MULTIPLE USAGES] Widely used in pneumatic tools such as cylinders, solenoid valves, crankcases, gear boxes, fuel tanks, etc. 4 x Muffler Item Type: Pneumatic MufflerModel: PSF-10Material: All Copper and ABSMaximum Pressure Resistance: 1.0MpaSilencer: 30DBOperating Temperature Range: 5-60℃Uses: Widely used in cylinders, solenoid valves, crankcases, gear boxes, fuel tanks, pneumatic tools Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement.