"E1-1/4 INCH DIAMETER, DOME TIP, HOG BRISTLE, TWISTED WIRE HANDLE, BRUSH, BRISTLE IS NATURAL COLOR, STIFF, RESILIENT HOG BRISTLES OF UNIFORM LENGTH, CLEANED AND STERILIZED; THE BRISTLES SHALL BE TRIMMED SO AS TO SHOW NO TENDENCY TO SEPERATE AT ENDS; BRASS, ZINC-COATED STEEL OR CORROSION-RESISTANT STEEL; DISTAL END OF THE BRUSH PART HAS A DOME COMPOSED OF SEVERAL FAN SHAPED WINGS OF THE APPLICABLE FILLER, NEATLY AND SECURELY BOUND INTO THE TWISTED WIRE"