Features: Custom wound 030 brushed motor 2s-4s rated voltage (Recommended for 3S usage) 16mm, 22.6:1 all metal planetary gearbox 3mm or 4mm "D" extra long output shaft (we recommend cutting off any extra length) 26.5g weight - 3mm shaft 27.5g weight - 4mm shaft 10.5mm M2 Face mount hole pattern Comes ready for combat, just solder the motor leads to an esc and you're on your way. Performance 12V input (3S) - 1220rpm free speed - 2A stall current - 1187 g.cm stall torque - 3.72W max power output 7.4V input (2S) - 752rpm 14.8v input (4S) - 1504rpm Check out the distribution boards here Find the CAD model here: https://grabcad.com/library/repeat-drive-brushed-1 Disclaimers: - These gearboxes can only accept ~2mm of face screw engagement. Using screws that are too long will result in damage. - Larger horizontal impacts can sometimes cause the back plastic part of the motor to come off. To help prevent this, either design in mechanical retention features or add some glue where the tabs connect the metal housing and the black part.