Includes (10) BR7HS Spark Plugs. Thread Size: 14mm, Thread Pitch: 1.25mm, Seat Type: Gasket, Resistor Value: 5K Ohm, Reach: 12.7mm (1/2"). Hex Size: 13/16" (21mm), Terminal Type: Removable Nut, Overall Height: ISO, Gap:.028" (0.7mm). Material: Nickel, Type: Standard, Size: 2.5mm, Projection: Non-Projected. NGK standard plugs are constructed for longer life and optimum performance. Compatible with the Following: Autolite: 2665, 3684, 4093, 422, XS4093, Bosch: 0242245517, W4AC, WR5A, WR5AC, WR5AP, Champion: 5883, 874, OE086, QL78C, RL4J, RL77J, RL78, RL78C, RL82C