Superior Parts SP 885-918 Aftermarket Piston Driver for Hitachi NR90AE & NR90AE(S) - 885-918, 885-519 & 887491
- Fits: Hitachi NR90AE
- Heat treated tool steel 6150 Rockwell hardness 50-52
- Aerospace grade number 2024 Aluminum piston
- Mechanically locked piston driver interface