ITEM NAME:10 Pairs 12.7 x 5.5 x 4mm Motor Carbon Brushes for Electric Drill B3K2 10 Pairs 12.7 x 5.5 x 4mm Motor Carbon Brushes for Electric Drill B3K2 Product Name : Carbon Brush;Carbon Brush Size (Approx) : 12.7 x 5.5 x 4mm/ 1/2" x 7/32" x 5/32"(L*W*H) Total Length(flat) : 33mm/ 1.3" Material : Carbon, Metal Net Weight : 16g Carbon motor brushes are one of the most components for power tool. Fit for electric hammer, electric drill, angle grinder, etc. Worn brushes are often the cause of a poorly running motor. Replacing brushes can fix an intermittent motor. New brushes can restore a motor's electric braking. Package Content : 10 Pairs x Carbon Brushes Note:Light shooting and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.