Product Description Includes: 1 piece 885918 piston driver Designed for compatibility with Hitachi NR90AE framing nailers Crafted from aerospace grade 2024 aluminum for durability, precision, and lightweight strength Driver blade made from heattreated tool steel 6150 with Rockwell hardness rating of 5052, ensuring longlasting wear resistance and consistent performance Key Benefits: Maintains reliable nailing performance by delivering consistent driving force, reducing downtime and misfires Built from quality materials to withstand heavyduty use and extend service life of your tool Precision manufacturing offers a secure fit for Hitachi NR90AE, avoiding compatibility issues and ensuring smooth operation Use Scenarios: 1. Ideal for professional construction work such as framing, sheathing, and deck building where consistent nail driving is essential 2. Suitable for workshop repairs, offering a dependable replacement part to restore nailer performance 3. for job sites requiring heavyduty, repetitive nailing without compromising speed or efficiency Performance and Specifications: Aerospace grade 2024 aluminum piston ensures strengthtoweight balance, minimizing wear on the nailer mechanism Heattreated 6150 tool steel driver blade provides durability under impact forces Tested for precise fit and alignment with Hitachi NR90AE nailers to maintain tool efficiency and accuracy This piston driver is engineered for professionals and serious DIY users who demand reliable, performance replacement parts for their Hitachi NR90AE framing nailer.