DIY wind power generation Motor. The swinging tail design will rotate with changes in wind direction. Motor shaft length: 13.5mm / 0.53 ". Motor height: 34.2mm / 1.35 ". Rated speed: 200-6000 rpm. Total size: about 20cm 13.5cm 9cm / 7.87 " 5.31" 3.54 ".
eBay