This is a Dremel High Speed Cutter. This Carving/Engraving Accessory Is A 1/4" High-Speed Cutter Bit by Dremel. FEATURES:
A high-quality, versatile cutter made from high-grade steel. Ideal for shaping, hollowing, grooving, slotting, inlaying, and making tapered holes in soft metals, plastics and woods.Great for conic surfaces. Repair furniture, create a decorative sign, engrave your valuables. INCLUDES: One High-Speed Cutter REQUIRES: Dremel Rotary Tool SPECS: Diameter: 1/4" (6.4mm) Shank: 1/8" (3.2mm) COMMENTS: This bit uses a 1/8" collet.