Meaning：Spare parts, a carbon brush with dimensions of 7×11×18 (the unit is not specified, presumably millimeters, mm). The carbon brush is a key component in equipment such as motors for conducting electric current. After long - term use, the carbon brush may affect the normal operation of the equipment due to wear and other reasons. At this time, such a spare carbon brush needs to be used for replacement.
Usage Scenarios：Applicable to various power tools (such as electric drills, angle grinders, etc.), small - scale generators, or other motor equipment that uses carbon brushes. When these devices have faults caused by carbon brush problems, such as unstable operation, reduced power, and abnormal sparking, this spare carbon brush can be used for repair and maintenance.
