Diamond Products Cb515 Hand Held Motor Core Bore 2 Speed with 5" Bit Capacity Hardware > Tools these disposable bags help extend these disposable bags help extend filter life by preventing debris from reaching the filter while enabling quick and clean disposal of collected dust and construction tradespeople who require dependable grinding and cutting performance The Diamond Products 98794 CB515 Hand Held Motor Core Bore is engineered for professional concrete and masonry drilling applications requiring power the Diamond Products CB515 hand held motor core bore provides the power and flexibility needed for demanding jobsite applications