... -1-25Thread Size:1/8",1/4",3/8",1/2",3/4",1"Thread Kind:BSPP,BSPT,NPTColor :NatureNormal Package:Plastic Bag.Usually, this kind of ... used for refuse the dusty,oil,air,and anyother materials which can't be work with the equipments at the same time ... , to reduce the noise is other function SEB-B-1 silencer Pivoted and Plated ...