About Our Products： New Helix-Style Brushes, Two-Stage Brushes and Bore Brushes 3", 4" and 6" brushes, Ideal for many automotive and industrial uses. Superior Quality: Made of premium quality stainless steel with wear resistance. Upgrade Design：The driver handle and rigid extension feature a spring-loaded, quick-lock coupler. Flexible extension features a flush locking screw for access into hard to reach areas. Function： .
