This bone shaft wrench was recovered from the Armstrong site, a Bluff Creek complex Middle Ceramic village in Harper County. It was made from a deer tibia and in addition to the eye it has a series of incised lines on the side and is highly polished. Shaft wrenches were used to straighten wooden spear or arrow shafts.
Kansas Memory
Kansas Historical Society
Bone Shaft Wrench from the Armstrong Site, 14HP5 - 7