A powerful, reliable coil from Mallory Ignition with classic good looksThe Mallory Promaster Classic series ignition coil is designed to meet today's specialized ignition requirements. This coil features a faster rise time and increased spark duration (compared to stock) to increase performance. It has a glass filled polyester case and oil filled construction to ensure a long life and no energy loss from arcing. This coil also offers excellent wire retention with a spark plug type secondary post, and brass contact