This is designed to detect the presence of static electricity on various objects. Ideal for middle school physics experiments, it helps students understand the principles of electrostatics through hands-on learning. The device features a simple yet effective design, making it easy to use in classroom settings. Features -Color:Assorted Color -Material:Plastic -Size:14.50X11.50X7.50cm/5.70X4.52X2.95in -High efficiency detection: the quickly and accurately detects whether an object is charged -Versatile use: suitable for static electricity friction experiments in junior high school physics, widely applicable in schools and laboratories -Easy operation: the to the object to be tested for charge detection -great and reliable: made of great materials, the is great and reliable for longterm use -Compact and portable: the small size of the makes it easy to carry and store, allowing users to perform charge detection anytime Package list: 2 x physics education tool