Vacuum System Accessories Flow-Through Silencers Model No.: FTS-0.250 Part Number A in. (mm) B in. (mm) D1 G Thread D2 in. (mm) D3 in. (mm) Item Weight oz. (grams) FTS-0.250 0.31 (8) 1.9 (48.2) G 1/4 0.37 (9.3) 0.75 (19) 0.6 (17)