Nitrous Express 5/16-8mm Late Model Billet Fuel Line AdapterNitrous Express solves another problem! Installing a nitrous system on a late model EFI vehicle can be a hassle if you don t have one of the new NX high flow Fuel Taps . These high flow adaptors make the chore of tapping factory fuel systems safe and easy. No cutting or drilling just a quick, easy install that takes only minutes and each high flow adaptor has dual outlets for multiple uses. Works on 5 16 & 8mm fuel lines