Includes basically all fittings and stock fans - only things missing, are the Socket 775 insulating washer (only needed for Socket 775); thermal compound; and the low noise adapter.

Heatsink in excellent condition - some mild cosmetic marks, etc, on the fan frames (but both work perfectly)

I had this installed on a Intel LGA 1150 CPU - but I believe it is fully compatible with LGA 1151, LGA 1155, and LGA 1156, etc. Also  compatible with various AMD sockets. Very capable heatsink - was superior to the Noctua NH-D14 when released!

Alphenfohn do make an additional fittings kit called:

'ALPENFOHN AM4 MOUNTING KIT FOR OLYMPUS, ATLAS AND MATTERHORN SERIES'

Apparently, the K2 Doom  (at least according to forums I've looked at) uses the same fittings as Matterhorn - so this kit (which is roughly £5-6), can make the heatsink AMD AM4 (and possibly AM5) compatible. However, this is not something I have tested, personally - and this kit is not included in this sale.

Any questions, please don't hesitate to ask!