Matt Black E-Adapter G1/8" to IG1/4" 1.True Hi-Flow Design. 2.Hi-Quality Brass Material. 3.High Quality E-Plated Finished In Deep Black Color. 4.Hiding O-Ring Design. 5.Design For Eheim Pump 1046 out-let. 6.RoHS Compliant. Thread : G1/8" to IG1/4" Thread : Inner G1/4" Thread Length :8MM Thread : G1/8" Thread Length :8.5MM