1.Package Content: 20pcs x Carbon Brush 2.Size:17 x 6 x 6 mm/ 0.67" x 0.23" x 0.23"(L x W x H) 3.Replacing carbon brushes can fix an intermittent motor. 4.Worn brushes are often the cause of a poorly running motor New brushes can restore a motor’s electric braking. 5.The carbon brushes also can be used as replacement parts for other brand power tools as long as the Dimension is suitable.