The 190 two star ESD safe (10 - 10 ohmssq) half hard bench brush is made of high grade bristles with a wooden handle. There are four rows of bristles 4.5 long and .5 wide. They will not shed. The overall length is 10.Specs amp; FeaturesBench, Half Hard, Application: General cleaning of large areas, Quality: , Surface Resistivity : 10-10 ohmssq, Shape: Straight, Material: Wooden Handle , OAL: 10 (250mm), Body Width: 0.5 (12.5mm), Tip Width: 4.5 (112.5mm), Tip Height: .5 (12.5mm)