Product Name: Easily Trimmed Ti Titanium Alloy metal Discs Model NO.: Ti Material: metal Feature: Waterproof Application: Adult Certification: CE Condition: New Trademark: yinghuamt Origin: China Product Description Ti discs with properties ofHighest biocompatibility (well tolerated in the patient's mouth, ideal for allergy sufferers),High corrosion-resistance and temperature-stability for durable restorations and veneers without distortion, andLow density of the metal ensures good intraoral comfort for the patient. And it is low cost compare to other material. It mean it's most cost-effective material.