The Koolance D5 top is a multi purpose top because it combines not just a top, but optionally a reservoir base. Packaging is standard Koolance black:
The top comes with mounting brackets (2 piece not 1 which will be a bit more fiddly), a stop fitting and the necessary adapter to mount a 60mm Koolance reservoir to the top:
At $45 it’s a few bucks more than the EK top, however it comes with a cover to hide your D5 completely. No longer a need to remove ugly stickers. The downside of course is that any speed control will be harder to get to:
The actual clamp bracket is metal and because it’s thick only 4 screws are needed to secure it. It sticks out the rear of the top and the two mounting brackets can be attached directly to the metal plate:
The screws however could have been countersunk which would have given a cleaner look: