<http://schema.org/description>
"* Voltage 6 - 15V\n* RPM 10668 at 12V - maximum efficiency.No load figures will therefore be higher.\n* Output 4.4 at 12V\n* Shaft diameter 2.3mm\nOther electric motors are available."^^<http://www.w3.org/2001/XMLSchema#string>
<http://hobby.uk.com/elec-motor-6-to-15v.html>