roth molar bands are made of pure stainless steel the features as follows: Superior Tooth MorphologyFull TemperedMemory & Elasticity Maintained After Pre-fit and RemovalProportional Graduated Half-Sizing, Numbered 29-1/2 44Increased Occlusal Edge Strength to Prevent DeformationStiffer Material to Withstand Additional Pressure of Extra and Intraoral Appliances