The Magnum Starter with Torque Drive is a high performance starter perfect for engines up to 1.80ci. Whether the engine is .15 or 1.80, this starter has the power and torque to start your powerplant. When you use a Magnum product, you'll be awed by the performance that you never knew was possible. Magnum understands how important superior products are for your model aircraft. The starter is uniquely designed for a comfortable fit in your hand, giving you the control needed for a safe start.