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 workpce.

Brand Name	Trend
Manufacturer Model No	TRE46-150X1-2TC
Type	Router Cutter
Specification	D=38 mm, C=19 mm, B=9.5&12.7 mm, R=12.7 mm, Shank Diameter=1/2 inch
accessory_type	Router Cutter
ebay_category	122829