Electronics hobbyists and makers, these micro stepper motors are perfect for your small-scale projects! Each motor measures just 8mm in diameter by 9.2mm tall - seriously tiny but packed with functionality. They operate on 1.5V to 3V DC power with 4 wires for 2-phase control, giving you precise movement control for robotics, CNC machines, or any project requiring accurate positioning. The output shaft is 0.8mm with a 1.8mm diameter copper gear featuring 10 teeth and 0.15 modulus - perfect for driving small mechanisms without slipping. At only 7 grams per set of two motors with wires, they're lightweight enough for drones, miniature robots, or any application where every gram counts. The 4mm output shaft length provides enough engagement for your gears or pulleys. Whether you're building a small plotter, camera slider, robot arm, or any precision movement system, these motors deliver reliable performance in a compact package. The copper gears provide better durability and heat dissipation compared to plastic alternatives. With 50 pieces in the pack, you've got plenty for multiple projects or replacements. The quality feels solid for the size - these aren't flimsy toys but proper miniature motors that can handle real workloads. If you work with small-scale automation or precision mechanisms, having a supply of these reliable micro steppers on hand makes prototyping and building so much easier!