Need some serious speed for your tiny drone or RC project? These coreless micro DC motors pack a punch! Each one is just 7x20mm but spins at a crazy 42000 RPM at 3.7V—perfect for upgrading or replacing motors in Blade Inductrix, Tiny Whoop, or other micro quadcopters. They're lightweight, efficient, and give you that responsive thrust you want for acrobatic flights. The wires are about 9.5cm long (red for positive, blue for negative), so you've got some room to work with when soldering. Just a heads-up: don't lock the shaft while powered on, or you might burn them out. Also, make sure to strip the insulation off the wires before connecting. Comes as a 5-pack, so you've got spares. Whether you're building, repairing, or just experimenting, these motors deliver performance without breaking the bank. Happy flying!