This is a propeller that is designed to slide into any 2mm motor shaft.
The 030-2927 model is a high speed DC motor 1.5~3.7V with RPM range of 23000RPMĀ ~Ā 52000RPM, used on RC DIY toy cars, boats.
This DC micro motor with Alligator Clips is perfect for students and hobbyists to demonstrate the functioning of a DC motor.
The MOT-130A-DS is a miniature 130 motor with double shaft 25x20mm rated at 3.7V
MOT-10-3V 3VDC Mini Motor 18000 RPM