This is 2.4v 7600 RPM Trimmer Motor. You can replace this motor with your trimmer one. This motor also has a coupler on the motor mount. This motor is powerful and has a perfect replacemnt of your trimmer. It can work from 2.4v to 5v. You can use een your mobile charge to power it. Motor dimension as follows -
body length - 34mm
total length -47mm
shaft dia -2mm
shaft coupler dia - 7mm
coupler length -4mm
motor width -23mm
dimension can be change  +/- 1mm