The Peterson Machine Tool HB2845 Engine Block Blaster is designed to efficiently and automatically remove dry carbon, rust, paint, and scale from heads and miscellaneous parts without an operator standing by. Simply load machine, set the timer, and allow the airless shot machine to clean the parts in five to ten minutes, the company says. Auto reversing cycle allows impeller to rotate backward producing shot blasting equally on both ends. The HB2845 has a load capacity of 500 lbs, loading height of 32", inside diameter fixture of 28", and has a cartridge-style filter.