Bitspower G1/4"Black Sparkle Enhance Multi-Link For Acrylic Tube OD 12MM. - True Hi-Flow Design.. - Hi Quality Brass Material.. - High Durability Nickel Finished In Black Sparkle Color.. - Design For Multi-Link Extension Application Via Acrylic Tube OD 12MM On Both Side.. - RoHS Compliant.. Features. Material. Brass, Nickel. Product colour. Silver