* The diameter of the disc is about 27 cm. There are four concentric circles on the disc and several small holes are evenly distributed for the insertion of hollow pins.
* The torque disc is composed of 6 discs, shafts, and hollow pins with wires.
* The torque plate is used for demonstration by middle school physics teachers and students' group experiments.
* There is a snap ring groove on the shaft end, and a snap ring is installed on the experimental dress to prevent the disc from falling off.
* It can be used with square brackets and hooks to study the balance conditions of objects with fixed shafts.