Vacuum System AccessoriesFlow-Through Silencers Model No.: FTS-0.250 Part Number Ain. (mm) Bin. (mm) D1G Thread D2in. (mm) D3in. (mm) Weight oz. (g) FTS-0.250 0.31 (8) 1.9 (48.2) G 1/4 0.37 (9.3) 0.75 (19) 0.9 (25)