The Mabuchi RF-500T-10750 is a highly efficient DC motor with a 2mm (diameter) x 9mm (length) shaft. It can operate within a voltage range of 2V to 12VDC, and at 12VDC, it only requires 45mA of current when not under load. 5.9V DC is the nominal voltage. This motor measures 1.25" (32mm) in diameter and 0.95" in thickness and comes brand new with 5-inch wire leads. It is also equipped with two 2mm holes for screws and was originally manufactured for Cassette Tape Decks.