Bi-directional coil brushes are twice the length of regular coiled brushes. They effectively provide twice the cleaning surface. The ability to load in the tube regardless of orientation saves time. Bi-directional 3" Coiled Tube Brushes are available for tubes .875" -1.5" O.D. with BWG ranges 16-22. Available by quote only. Custom sizes available. Call for more information. Select tube O.D. and gage for proper sizing. Available SKUs CB3-087-22, CB3-100-22, CB3-112-16, CB3-125-16, CB3-087-18, CB3-087-20, CB3-100-16, CB3-100-18, CB3-100-20, CB3-112-18, CB3-112-20, CB3-112-22, CB3-125-18, CB3-125-20, CB3-125-22, CB3-137-16, CB3-137-18, CB3-137-20, CB3-137-22, CB3-150-16, CB3-150-18, CB3-150-20, CB3-150-22