Material: fiberColor: multicolorSize: 1.2mm 1.4mm 1.6mm 1.8mm (each size 20 pieces) Feature:Fiber messages do not corrode.Because the stiffness (Elastic Modulus) of fiber posts is like the tooth structure, they function with the tooth instead of against it, in helping to prevent fractures and other problems.Convenient to use.For dental use.Package included:160 Pcs * Fiber Post32 Pcs * DrillNote:1.Please allow 0.1cm error due to measurement tools and manual measurements.2.Because of the difference in light and resolution, the color of each product will be different.