This product may be intended for use by a health care professional use only. The seller may ask you to evidence you are a qualified health care professional entitled to buy and use such products in your country.Product name:Dental Lab Polishing ShankSize:Length 46mmMaterial:MetalFeature:1.Metal material,strong and sturdy.2.These mandrels are slotted with a 2.35mm( 3/32'')shank.3.Suitable For Polisher Machine Dental Material Jewelry BeadsPackage Include:100pcs/pack