Acid Brush, Horse Hair, 1/2 in. 6 in. OAL, One Gross (144 brushes) These brushes have a wide array of uses including application of glue, stains, solder fluxes, paints, and paint remover. These brushes are Made in the United States of America. Unlimited number of industrial, scientific, automotive, hobby and craft uses and are simply great to have in the garage, shop, or home. Great for cleaning and dusting delicate items or hard to reach areas like keyboards and phones. Tin plated handles with black horsehair bristles. 6" long brush length, 1/2" bristle width, 3/4" trim (bristle length).