Made from diamond powder for high quality and precision. These drill bits are designed for delicate, accurate hole drilling in tough materials. Key benefits - High quality material: diamond powder construction delivers precise cuts and lasting sharpness. - High speed capability: compatible with drill setups up to 20000 RPM for efficient hole drilling. - Better results at higher speeds: the faster the drill, the cleaner and more accurate the holes. - Coolant recommended: use cold water during drilling to cool the bit and extend its life. - Versatile applications: ideal for drilling holes in jewelry components and hard materials such as ceramic, jade, agate, glass, amber and semiconductor materials etc. Specifications and performance - Material: diamond powder - Recommended speed: up to 20000 RPM for best results - Cooling: use cold water during drilling - Applications: drilling holes in jewelry, ceramic, jade, agate, glass, amber and semiconductor materials etc Usage scenarios - Jewelry making and beadwork: drill small, precise holes in gemstones or glass beads for settings, clasps, or decorative elements. - Craft and glass/ceramic work: create clean holes in ceramic tiles, glass pieces, or decorative beads for inlays and fittings. - Precision materials work: drill holes in jade, agate, amber, or semiconductor materials for prototyping or component assembly. Note: For best performance, operate at higher speeds within the 20000 RPM range and maintain cooling with cold water during drilling.