Router Bits › Engraving Bit Image 1 of 2 Image 2 of 2 Engraving Bit $75.00 The Diamond tip allows you to etch on hard material. Purchase Added! The Diamond tip allows you to etch on hard material. Specifications:Engrave the following materialsNon- Ferrous MetalsCeramic Tile Etch Hard MetalsMarble Related Products Diamond 90 degree Tip Bit $25.00 DWC03-1/4 Ball Round Nose Bit $33.29 1/8" (.125) Ball Nose End Mill $10.00 DWC04 Solid carbide 90 degree Vee 3 Flute groove bit $21.79 RU2075 1/4" Up-cut Spiral Solid Carbide 2 flute Bit $28.35