The 3-flute bits make delicate grooves and incisions with laser precision. Make kind effects by running the 60? bevel edges. Perfectly balanced to give you a superior accuracy with no risk or burning. Raise them to produce a delicate fine incisions or work the whole 12,7mm (1/2") diameter to render bold highlighted lettering. Super strong steel shank and micrograin carbide cutting edges guarantee long-lasting performance.