LMT Onsrud - 37-01 0.005" Tip Solid Carbide Single Flute Engraving Router BitLMT Onsrud 37 01 0. 005" Tip Solid Carbide Single Flute Engraving Router Bit These are single flute engraving tools designed for V grooving or bevelling operations. They can be used for both soft and hard woods, soft and hard plastics, aluminum and solid surface panels. Specifications Shank: 1 4" Angle: 60 Deg Overall Length: 2" Flute Type: Straight Engraving