Insert rings that closely encircle your router bit help to control dust and provide more flat reference surface around the bit for clean, accurate cuts. These are made from sturdy, transparent ABS plastic for good visibility while routing freehand. A range of inside diameters—1-1/4'', 1-1/2'' and 2-1/2''—are included to fit various router bit sizes. The 1-1/4'' ring has the required recess to mount standard guide bushings.
WARNING: Cancer and Reproductive Harm. For more information go to www.P65Warnings.ca.gov/product WARNING: Drilling, sawing, sanding or machining wood products can expose you to wood dust, a substance known to the State of California to cause cancer. Avoid inhaling wood dust or use a dust mask or other safeguards for personal protection. For more information go to www.P65Warnings.ca.gov/wood