Twice the bristle density of standard brushes for maximum scrubbing power. Stiff, nickel plated phosphor bronze bristles eliminate chemical breakdown in the bore and extend the life of the brush.FASTER RESULTS. LESS EFFORT.Maximizing bore contact yields better results. Bore cleaning is a chore, and so the goal is simple - get it done faster and get it done right. The Bore-Max Speed Clean System delivers up to 4 times more bore cleaning contact per pass than traditional brushes, jags and patches. This means less passes to clean your bore and less time spent on the chore. Upgrade to High Performance Gun Care!HERE'S THE MATH:SPEED BRUSH ---2X MORE BRISTLES = 2X MORE CRUD SCRUBBEDRIFLE SPEED JAG & PATCH --- 4X MORE PATCH CONTACT = 4X MORE SURFACE CLEANED HANDGUN SPEED JAG & PATCH ---2X MORE PATCH CONTACT = 2X MORE SURFACE CLEANED