1.Glorytek low pressure series DTH bit 2.Various in size 3.Prompt in delivery ... ",5",6",8",10")in various size and type.The Series: (1) Low pressure bit (2) Medium Pressure bit (3) High Pressure ... , Sandvik etc. ----Type and Technical Specification of bits for low pressure DTH Hammers Glorytek low air pressure series down the hole drill bits