1.75mm 10pcs 65mm Round Cylinder Diamond Drill Bits for Precision Gem, Stone & Glass Drilling

Diamond Drill Bits are precision tools for fine detailing and material processing. Discover the versatility of diamond drill bits, designed with durable diamond grit for aggressive cutting, precise shaping, and long-lasting performance. Available in multiple grits—coarse (40,60,80,120) for rapid material removal, and fine(240,600,1200) for detailed engraving and polishing. These tools suit lapidary artists, jewelers, sculptors, and precision craftsmen. Ideal for ultra-hard materials like wood, glass, ceramics, jade, hardened steel, and semi-precious stones, these diamond drill bits excel in both rough shaping and fine detailing. Coarse grits remove excess material quickly, while fine grits refine engravings, touch up surfaces, and deliver flawless finishes. Electroplated diamond tools further enhance performance on gemstones, ceramics, and metals. The shank 0.8mm for 1mm diameter，1.0mm for 1.2mm diameter,1.2mm for 1.5mm diameter,1.5mm for 1.75mm diameter, 2mm for 2.5mm diameter,3mm for 2.5mm diameter,3.5mm for 4mm diameter ,4.5mm for 5mm diameter，5.5mm for 6 mm diameter same the diameter,The diamond grit is 200#

• Silicon Abrasive Points for polishing and fine detailing on metals, ceramics, and glass.
• Bullet Head Drill Bur – ideal for detailed engraving and material removal on metals and stones.
• Conical Countersink – perfect for creating countersinks or chamfers on metals and ceramic surfaces.
• Concave Cylinder – used for shaping and smoothing cylindrical surfaces.
• Concave Bead  – specialized for bead carving and intricate curved patterns.
• Cylinder Head and Round End Cylinder– versatile for general shaping, engraving, and surface finishing.
• Diamond Coated Bur Sets  – for precise drilling, shaping, sanding, carving, and engraving across metals, gemstones, ceramics, and glass.
• Donut – circular shaping and smoothing for metals and glass.
• Egg – for rounded engraving and sculpting detailed curves.
• Flat Round Drum – used for flat surface grinding and contour shaping.
• Double Bevel Edge - ideal for creating sharp, precise edges on metal, stone, and ceramic surfaces; perfect for chamfering, beveling, and decorative detailing
• Flat Disc– ideal for smoothing and polishing flat areas.
• Flat Wheel– versatile for grinding edges and small flat surfaces.
• Flame Head – perfect for intricate engraving, tapering, and decorative shaping.
• Specialty hollowing: Hollow Cup, Tapered Inverted Cone Hollow – for deep cutting, hollowing, and engraving.
• Unique profile bits: Inverted Trapezoid, Tapered Rounded End Cylinder Bit  – allow unique profiles and smooth edges.
• Mushroom Head – ideal for creating rounded, convex surfaces and smoothing concave areas on metals and stones.
• Needle Shape – perfect for precision engraving, pinpoint drilling, and fine detailing work.
• Point Shape Head – designed for sharp, concentrated cutting and deep engraving on hard materials.
• Ring Rounding Drill Bits – used for smoothing edges of rings and circular profiles, ideal for jewelry finishing.
• Sand  Suction Eye – specialized for suction-assisted sanding and finishing of small cavities or eyelets.
• Twist Head Drill Bits – versatile bits for twisting, contouring, and detailed carving in hard materials. 

For optimal results, use a variable-speed grinder to control speed and prevent overheating. Wet grinding with water swivel adaptors extends tool life and improves cutting efficiency. Clean bits with a soft brush and store in dry conditions to maintain performance.

Whether carving gemstones, engraving jewelry, or shaping delicate sculptures, diamond drill bits deliver professional-quality results with unmatched durability and precision.