Hultafors Agdor Felling Axe Yankee, 900 gram head, 26" Hickory handle, IATF spec:

Hultafors Yankee Felling Axe 900 gram head HY 10

The axe is hand-forged and made from Swedish axe steel using traditional methods in use since 1697.
The steel is stuck several times, increasing its density and thereby the durability of the axe.
Has a clear tempered zone within which the axe can be sharpened whilst not detracting from the strength of the edge.
The shaft is made from hickory and treated with linseed oil.

Specs:
Head weight: 900 gram
Blade length: 3.75" / 90mm
Handle length: 26" / 650mm
Handle type: Curved
Handle: Hickory

Meets IATF spec for big axe.