PrimoChill 360mm CTR Phase II - Clear NEWCompression Ring End Caps, NEW D5 Compatible Pump Head, Easy end cap removal for cleaning, Multi-Port End Cap: 3 ports (1 top inlet and 2 side inlets for return) Delrin compression end caps (optional Acrylic), Stand Off screws for varied height mounting, Rigid Mount Hardware and template Included Includes Vortex Killer for vortex free operation, Optional Colored Aluminum Compression Rings Pre-Installed Ready To Use, Made in the USA. Laser Cut Acrylic Tubes, Inner Diameter: 2.25 in (57mm), Outer Diameter: 2.50 in (63mm), Overall Length: 14.57 in (370mm)