Description This Mini Fan Blade is perfect for students who are conducting experiments. Its compact design makes it easy to handle and use. The inner hole is precisely measured at 1.95mm, ensuring a tight and secure fit for the motor. It can be easily paired with a miniature motor for DIY projects. Features -Color:Sky-blue -Material:Plastic -Size:5.20X5.00X1.00cm/2.04X1.97X0.39in -The compact and mini design of this motor accessory makes it easy to handle and maneuver during experiments. -The highly flexible blade material allows for various configurations, making it a versatile addition to any diy experiment. -This mini fan blade accessory is an excellent tool for enhancing student learning during experiments and hands-on activities. -During the DIY process, you can relax yourself and increase your hands-on ability. - plastic, fine workmanship smooth surface and no burr, would not hurt your fingers. The compact and mini design of this motor accessory makes it easy to handle and maneuver during experiments. The highly flexible blade material allows for various configurations, making it a versatile addition to any diy experiment. This mini fan blade accessory is an excellent tool for enhancing student learning during experiments and hands-on activities. During the DIY process, you can relax yourself and increase your hands-on ability. plastic, fine workmanship smooth surface and no burr, would not hurt your fingers.