These smart red motors have a top speed of 160rpm at 5v. They integrate neatly with axles and blocks from popular ABS stud-based building block construction kits! We really like how you can connect two axles to the dual outputs on this motor so you can use one motor to drive two wheels. It's also easy to connect blocks to the sides by poking the studs into the holes. The gears inside these motors will 'slip' when the blocking load is too high instead of jamming - helping avoid damage to your motors and boards. The wires are a standard motor pinout - Red - positive Black - negative The cable has a fused 1x2 DuPont socket connector on the end, so it's easy to connect to jumper jerky or 0.1" pitch pin headers. LEGO® is a trademark of the LEGO Group of companies which does not sponsor, authorize or endorse this product.