ACCEL C-cut performance spark plugs ignite a better path to high performance! ACCEL offers a new C-cut designed ground strap that aligns with the centerline of the electrode to create a much improved electrical path. Shrouding or obstruction is reduced, allowing a larger flame, greater firing energy, and a more complete burn. And, a more complete burn results in greater fuel efficiency and reduced emissions, plus increased performance and throttle response. Unshroud the spark to ignite your vehicle's performance with ACCEL C-cut performance spark plugs.