ESD Brushes are ideal for removing dust, dirt and left over materials from printed circuit boards (PCB) and other static sensitive components. Conductive carbon loaded polypropylene handle. Permanent static dissipative bristles, made of Nylon 6.12, superior grade, high quality nylon filament, yellow bristles, 0.4mm in diameter. Brushes can be used with IPA (Ispropyl alcohol). Highly resilient, durable and abrasion resistant. For cleaning ESD sensitive assemblies Specifications Length: 6” (153mm) Brush width: 1/4” (6mm) Bristle firmness: Hard Bristle firmness: Medium Handle Material: carbon loaded polypropylene Volume Resistance: 1 x 104 to < 1 x 1011 ohms tested per ANSI/ESD STM11.12