Acid Brush, Tin Handle Acid Brush. Our acid brushes are economical & great for one-time or repeat use in acid, glue, paste, soldering, touch-up, dusting, or other general-purpose applications. Tin-handle acid brushes are sold by the box and perfect for high-volume requirements. Width 1/2, Trim Length 3/4, Overall Length 6. You get 144 acid brush in a box. 7-2