1 pcs Water Cooling Visual Flow Indicator & 2 pcs G1/4 double male adapter Application:Computer Case Type:Water Cooling Compatible CPU:Common 3 impeller water flow meter helps you to observe the speed and working states of the water flow. durable to use. Polished surface processing amplifies cutting property and prolongs using life. Adhesive sealing, easy to install and use. Color:Silver & green material:metal & plastic G1/4 double male adapter Size:inner hole diameter: 9.5mm Water Cooling Visual Flow Indicator: Screw Thread: G1/4 Interface Diameter: 12.9mm Size: Approx. 39 x 39 x 23mm / 1.6 x 1.6 x 0.9 inch colour:green Material:plastic Package Contents: 1 x Water Cooling Visual Flow Indicator 2 x G1/4 double male adapter Only the above package content, other products are not included. Note: Light shooting and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.