Grinding needle use (Grinding needle shank diameter is 2.35mm) Needle A: Dedicated to drilling and trimming Emerald Agate Jade Pendant Stones Needle B: Used for grinding, engraving, polishing, gouging, burring, burring and welds C2C3: Used for engraving, gouging, carving, cutting lines Needle C7: emphasis on sterilization and skin removal and modelling D needle: focus on drilling, reaming, rubbing and trimming, etc. E needle: Used for peeling and sterilizing, making lettering, line cutting, fine carving, polishing, hollowing, etc. F needle: Emphasis on concave carving, U-shaped surface carving, grinding, deep hole drilling, hollow carving etc. G needle: focus on edge and concave slot drilling, grinding, repairing, carving etc. Needle H: emphasis on outline, hair, trimming, right angle engraving, buffing and polishing Q Needle: Focus on making eyeballs, toads, pimples, hemispheres, trimming, polishing, engraving, etc. Grinding needle use (Grinding needle shank diameter is 2.35mm) Needle A: Dedicated to drilling and trimming Emerald Agate Jade Pendant Stones Needle B: Used for grinding, engraving, polishing, gouging, burring, burring and welds C2C3: Used for engraving, gouging, carving, cutting lines Needle C7: emphasis on sterilization and skin removal and modelling D needle: focus on drilling, reaming, rubbing and trimming, etc. E needle: Used for peeling and sterilizing, making lettering, line cutting, fine carving, polishing, hollowing, etc. F needle: Emphasis on concave carving, U-shaped surface carving, grinding, deep hole drilling, hollow carving etc. G needle: focus on edge and concave slot drilling, grinding, repairing, carving etc. Needle H: emphasis on outline, hair, trimming, right angle engraving, buffing and polishing Q Needle: Focus on making eyeballs, toads, pimples, hemispheres, trimming, polishing, engraving, etc.