Offered with the 1991-1996 NSX when new, the factory metal "titanium look" key was a special part of ownership as unique as the car itself. The key is actually made from Monel (nickey alloy composed of 70% nickel, 30% copper).
As this is an accessory, we expect the factory to discontinue this part in the near future as is becoming common with many of the NSX factory accessories.
The key is "blank" and must be cut to your car. We recommend taking the key to a professional locksmith for cutting (take your existing key with you).