FORM N°2. VITA color system.3 layers synthetic resin teeth.We use new technology of pressure injection, which can assure internal tooth tissue density, without any bubble.Used super-micro filling materials and Cross-linking network structure, the slave's hardness reaches 13.6㎏/mm2.Model：390、419、425、426、438、447、448、468、501、503.NORMALLY, we ship 425 or 468 to you if no specific requirement of size from you. If you need other size, please leave message with your order together, we will send size according to your requirement. Shade：A1、A2、A3、A3.5、A4.SDent 2 Boxes 3 Layers Super Hard Synthetic Resin Teeth Multi-Layer Acrylic Composite False Teeth Denture Polymer Polymerial Materials & Full Set & A1 & 56PCS.Please leave message of size you need when you buy it. If we can't get your messages in 2 days, which will be seen that you will accept normal size 425 or 468 according to our stock, they are popular on the US market.