Our newest barrel design for core bits has revolutionized the coring industry! Not only does the top of the core barrel unscrew for fast and safe removal of core samples, ( 1-1/4" - 6-1/4"), but we have barrel extensions  for all screw top bits to allow drilling up to 6 feet without removing the bit from the hole

• 1-1-1/2" bits -5/8-Arbor
• 1-3/4" - 16"bits 1-1/4" Arbor