This bit will step-rabbet the back of your picture frame allowing ample space for glass, artwork and backing. The Router bit cuts a 3/16 thick front rabbet for your glass or mirror, and an additional back rabbet of upto 5/8 for your artwork and backing board. The stock should be routed in a vertical position using the fence to adjust the back rabbet depth. Two flute meeting carbide cutters with a 1/2 Shank. Highlights: - Cut a stepped or multi level rabbet for glass, artwork and backing - Premium C3 micro-grain tungsten carbide blades for a sharper & longer lasting edge - For use on table mount and handheld router - Silver induction brazing for maximum strength and durability - Cuts a double stepped rabbet to accommodate artwork and glass of a specific thickness - Manufactured with anti-kickback design to help prevent workshop mishaps Item Includes: 1 Router Bit Create double rabbets ideal for picture frames. The front rabbet is specifically designed for glass with the back rabbet leaving enough space for the artwork and backing. Choose from bits designed for 1/8, 3/16 and 1/4 glass.