Made from knife-grade stainless steel, razor-sharp right out of the package, ferrule is made from aircraft quality aluminum and offers perfect flight because it is spin-tested within .002 thousands of an inch, patented bone splitting diamond tip. 2 3/16" X 1 1/8" (3-pk). Size: 2 bld Pack Size: 3/pk. Weight: 85gr. Style: BH Diameter: 7/8"