Perfect XR Cree Heatsink seats 3 or 4 Cree 7090 XR-E emitters in a Triangular or Square configuration. Fits in the head of a Mag C. Use the McR19 XR reflector.
Approx. Dimensions: Diameter 1.90 inch (48mm) 0.60"(15mm) tall
PXR Cree Heatsink
It may work with newer Cree emitters.