A2 is a common color.A3 is used by people who are yellowish.A1 is used by people who are white.Easy to adhere to bracket for orthodontics.Low polymerization shrinkage.High strength and polishability.Similar modulus of elasticity with dentine.Radioopaque and fluoride releasing optimal polishability and high shade stability.Suitable for most cases of restoration, extensive indication of usage.Item Name: Micro Hybrid CompositeMaterial: ResinNet Weight: 2.5gSize: 16.5cm x 3cm x 2cm/6.49" x 1.18" x 0.79" (Approx.)Notes:Due to the light and screen setting difference, the item& 39;s color may be slightly different from the pictures.Please allow slight dimension difference due to different manual measurement.Package Includes:1 x Micro Hybrid Composite