Jarvis manufactures the Model CPP pneumatically powered hock and neck cutter for turkey, goose, duck and ostrich. Jarvis’ CPP, the most durable, trouble-free hock and neck cutter available, is constructed from rugged, corrosion-resistant materials for optimum hygiene and easy maintenance. The CPP does not use springs. A pneumatic blade closing/opening procedure operates the blades, ensuring no down time due to spring failure. All air pressure is converted into cutting force.