Genuine OEM Metabo HPT Part Same tools. New name. Hitachi Power Tools has renamed to Metabo HPT Before Ordering Please Reference Tool Diagram to Ensure Part Compatibility Compatible wih the following tools NR65AK, NV75AG, NT65MA2, NT65MA3, NT65MA4, NT65M2 (Tools Sold Separately) Includes (4) 882913 Head Valve Springs This Metabo HPT 882-913 Head Valve Spring is compatible with the following tools: NR65AK, NV75AG, NT65MA2, NT65MA3, NT65MA4, NT65M2 (Tools Sold Separately).