Diameter x Length: 78.7mm x 53.4mm.Aircraft aluminum.Connection: 5.5 mm DC/ Jack plug.Propulsion: Precision DC motor.Power Input: 15 V Switch frequency: 55 ?¡ìC 165 Hz.Rpm range Stitches / Sec: 8V-8000rpm / min 8-800 / sec.Running Volt :6v working volt :7-12v Max volt:15v.
