NA-GRANI HMD Heat Management Device
The NA-GRANI HMD is a one piece stainless steel Heat Management Device, that comes from Russia. It is an open top HMD so that you can fit 3-4 Cubes Russian style, meaning 2 inside and 1-2 half way in around the edge.
Bottom diameter – 74 mm
Internal diameter – 56 mm
Depth – 24 mm