Council Tool 3.5 lbs. Michigan pattern double bit axe comes with phantom bevels and a 36" straight handle. Phantom bevels -- or hollows -- are designed to reduce sticking and minimize burst wood chips. Michigan pattern originated from the state of the same name. Double bit axes were sometimes sharpened in different ways. One end was thinner and sharper and used for knot-free cutting; the other end was thicker and blunter and was used when knots were present or to cut near the ground where contact with dirt was likely.The forged tool steel head is hand sharpened double bits for cutting and splitting.It meets ANSI Standards call for bit hardness of Rc 45-60, at least 1/2 inch back from the cutting edge. Council Tool internal standards call for tempered bit hardness of Rc 48-55 and we target 1-1/4 inches from the cutting edge.The natural steel finish on head and cutting edges coated in clear lacquer to deter rust. The 36" double-bit American hickory handle's eye section is dried to below 10% moisture content to minimize shrinkage and help prevent loosening. The Axe head is hydraulically seated onto handle and secured with a serrated aluminum wedge. The serrated shape improves bite and the aluminum choice of material is strong, lightweight and does not change size with moisture content. The interior detail of the eye is tapered and allows for a strong mechanical bond. Approximately 1/2" of overall length of handle is removed during assembly.