Tube and Valve Brush Bristle Material Polyester Handle Material Not Applicable Brush Diameter 2.36 in Brush Length 6 1/2 in Handle Length Not Applicable Bristle Color Yellow Chemical Resistant Yes Acid Resistant Yes Application Pipes and Tubes Bristle Firmness Medium Bristle Length 2 3/8 in Brush Width 2 5/8 in Color Coding System Yes FDA Compliant Yes Features Fda Compliant Grip Material Polypropylene Overall Length 7 1/8 in Temperature Resistant Yes