Deer arrows have a long
trihedral pile of antler from 4 to 8 inches long, with a sharp thin-edged
point slightly concaved on the faces like the point of a bayonet. Two of the
edges are rounded, but the third is sharp and cut into one or more simple
barbs. Behind the barb the pile takes the form of a rounded shank, ending in a
shoulder and a sharp rounded tang a little enlarged above the point.