NGK Iridium IX Spark Plugs Set

I'm offering a set of new NGK Iridium IX spark plugs, known for their enhanced ignitability and long service life, perfect for ensuring your engine runs smoothly. Here are some of the specifications: Electrode Core Material: Iridium, Electrode Tip Material: Iridium, Resistor Type: Yes, Reach: 26.5mm (1.04 in.), Hex Size: 16mm (5/8 in.). I've checked online, and similar spark plugs usually go for around $20 to $30 per plug. Given that these are brand new, I've priced them accordingly for a quick sale. If the ad is up, the plugs are available.