8-1/2" Mill Shoe
8-1/2" Core Head
8-1/2" Pilot PDC
8-1/2" HE230HU413D
8-1/2" JE28
9-1/2" DR616D
8-1/2" HU616D
8-1/2" HA516D
8-1/2" SP516D
8-3/4" SP516D
8-7/8" SP516D


