The 197-ESD two star 25 offset ESD safe (10 - 10 ohmssq) medium stiff toothbrush style brush has three rows of bristles. The square plastic handle has finger grooves. The brush head is 1.25 long and .38 wide.Specs amp; FeaturesCleaning, ESD Safe, Application: Ideal brush for scrubbing, Quality: , Surface Resistivity : 10-10 ohmssq, Shape: Offset, Tip Angle: 25, Material: Plastic handle , OAL: 6.75 (170mm), Body Width: 0.375 (9.38mm), Tip Width: 1.25 (31.25mm), Tip Height: .38 (9.5mm)