OptiBond eXTRa Universal Dual Cure Unidose Kit, Single Kit. Contains: 50 Unidoses Primer (0.18mL/each), 50 Unidoses Adhesive (0.18mL/each), 100 Applicators, 1 Technique Card. Two-component universal light cure adhesive. Provides outstanding adhesion to all composite self-cure dual-cure and light-cure resin cement and core build-up material eliminating the need for any auxiliary product. 50 unit dose kit