The 212C-H three star ESD safe (10 - 10 Ohmssq) brush is heat- resistant to 370F. It Features: stainless steel handles and horse hair bristles which are mechanically clamped into the handle for maximum fiber retention. The overall length is 4.75 and .32 diameter handle with .38 long and .38 wide bristles. The brush is used for scratch-free dry brushing and is heat resistant to 370F.Specs amp; FeaturesHeat Resistant, ESD Safe, Application: Heat-resistant to 370F, Quality: , Surface Resistivity : 10-10 ohmssq, Shape: Straight, Material: SS Handle wHorse Hair Bristles, OAL: 4.75 (118.75mm), Body Width: 0.32 (8mm), Body Height: 0.32 (8mm), Tip Width: .38 (9.5mm), Tip Height: .38 (9.5mm)