The S651 Megatron Super Duty Starter is for large engines to 80cc. This starter features 3″ aluminum cone, 3″ silicone rubber insert, double steel handles and front ball bearing. The S651 Megatron Super Duty Starter can be operated at 12 or 24 Volts. Output 600 in-oz of torque on 12 Volts, 1200 in-oz of torque on 24 Volts. 280 no load RPM. Maximum current draw 100 Amps at 12 V.