grab type core barrel ,grabing style core barrel

main use for gravel , boulders

Core barrel is used for cutting annular ring in rock, concrete and in steel reinforced concrete; consequentially the centre core can be broken using chisel, rock auger or Cross Core Barrel.

Using core barrel is possible to increase considerably pressure and torque on the cutting ring which can be equipped with different type of round shank chisei, quick change bars and rolier bits.