bristle brushes: 05E06,abrasive brushes for dental lab and jewelry making for cleaning,polishing and grinding ceramic,metal 05E ... (height) 12.7mm9.5mmL(length) 36mm36mmquality:made from grey ponny hair, mediumused for dental, jewelry polishing, polish all metallic surfaces extremely wellclassic ... brushes ideal for cleaning, polishing and grinding ceramics, metal,jewelry, etc. dental bristle brushes