WeThis is a set of 4 Genuine NGK Spark Plugs with part number SX7938. They are V-Power Spark Plugs with a voltage of 4V and fitment type of Direct Replacement. The spark plugs have a Hex Thread design, Ignition Heat Range Resistor, and Solid surface finish. They are compatible with various models including XC92YC, XC12YC, TY26709, and RC14YC.