Promark Nylon Bristle Brushes feature thicker-gauge clear nylon bristles. The bristles conveniently retract into the American made impact resistant plastic handle. White nylon bristles. Thicker bristles provide pronounced response. 13 3/4" length with bristles extended. All Promark drumsticks are designed, engineered, and manufactured in the USA at our Texas facility to the most stringent quality controls in the industry.