Amana Tool 49760 Variable Corner Round 3/8 Radius.

Roundover both the top and bottom edges in just one pass with this assembly. Interchangeable spacers alter cutter spacing to accommodate different stock thicknesses up to 1-1/4". The assembly includes the arbor a pair of multi-angle cutters pilot bearing spacers and shims. Replacement parts are available separately. For best results use in a router table!