Grandio Blocs CAD/CAM - A2, Low Translucency, Size 12, 5/Pk. Resin Nano-Ceramic Hybrid CAD/CAM Block, 10.5mm x 12.5mm x 16mm. fast intraoral setting time (30-45 sec). Resembles natural teeth perfectly. A nano-ceramic hybrid composite milling block designed for creating dental restorations. The specific product listed is size 12, shade A2, with low translucency, and comes in a package of five blocks.