Self-guiding cutters for rounding over edges do not require a side fence. They are supplied with two bearings. Use the larger bearing for a round-over. If the cutter is lowered, a top quirk can be produced. A full round/bullnose for stair treads can also be produced by taking a second pass from the opposite side of the workpiece.

Brand Name	Trend
Manufacturer Model No	46/115X1/4TC
Type	Router Cutter
Diameter Cut	15.9mm, 18.7mm, 19mm, 22mm, 24.7m, 25.4mm, 28mm, 32mm, 34.9mm, 38mm, 41.1mm, 42.7mm, 44.5mm, 51mm, 57.1mm, 63.5mm, 76.5mm, 89mm