Federal Style Banding - 1/8" wide. Made from solid Holly and Walnut hardwoods.
This is a few thousands of an inch under 1/8 wide. (About .122") Designed to fit snugly in a 1/8" routed channel - single pass. It will bend easily around a 3" radius. Probably will go around a smaller radius if you are slow in bending it. Here it is shown inlayed in about a 2-1/4" raduis.
Or you can inlay it in a straight groove.
The US dime is there for size reference.