Bore Tech BTBP-40-003 Pistol Brushes Brass 40/41 Cal Handgun Bore Tech's double-wound Brass Pistol Brushes have twice the amount of phosphorous bronze (brass) bristles than the leading competitors' brushes, resulting in double the "scrubbing action" and faster cleaning. Each brush is cold-wielded to the brass coupler and the brush bristles are filled to the end. Type: Brush Size: 40/41 Cal Handgun Quantity: 3 Pack Bristle Type: Brass Length: 2" Material: Brass Thread Pattern: 8-32 Suitable For: Handgun