This rental is an Edco stand mount core drill. We rent all of thecore bits needed for this unit. A vacuum/anchor base is avaliable which, when activated, will keep the rig solid to the ground. Bits come in a variety of sizes from 1/2" to 12". There is also a 12-inch extension available for deep drilling. Sometimes referred to as a cement drill, hammer drill, concrete drill or concrete boring tool or a concrete masonry hole saw or a concrete hole saw or coredrill or concrete hole drill or a wet core, concrete corer, a core machine or whole saw for cinder block.