Heatsink Dimensions: 36 x 36 x27.6(H) mm Features: Multiple push pin locations for universal mounting on various board assembly (hole to hole distance 54.6mm and 59mm) Formed of pure copper for enhanced thermal conductivity Excellent surface flatness minimizes the interface between the heat source and heat sink Polished mirror surface, flatness for machined surfaces are typically in the range of 0.0003"