Diamond Drag CNC Engraving Bit, Pro Grade for Metal Glass Stone Acrylic, 1/4” Shank

Professional-grade diamond drag engraving bit for CNC routers, mills, and plasma cutters delivers crisp engraved detail on a wide range of materials — including metals (brass, aluminum, steel, stainless steel), glass, stone, granite, and acrylic. Unlike standard diamond drag bits found on Amazon, this 1/4" shank industrial-grade CNC engraving bit is trusted by major manufacturers — including Campbell’s Soup, General Motors, and NASA — for high-precision engraving. Designed for any CNC machine with X, Y & Z motion — including CNC routers, CNC milling machines, and CNC plasma cutters — this CNC engraving bit produces clean engraved lines. Its spring-loaded “floating head” applies consistent pressure to the diamond tip, automatically compensating for warped materials or imperfect tables. How it works: The spindle remains OFF during engraving. The diamond tip is dragged across the surface, leaving precise, crisp engraved lines on your CNC project. Adjustable engraving pressure allows