Master-Dent Blue Gel Etch offers 37% phosphoric acid gel in various packaging options. Features: - 37% Phosphoric acid formula. - Remains where placed – does not run, yet rinses easily without residue. - Accurate placement through small-gauge angled applicator tips. - Vivid Blue for visual confirmation. - Luer lock tips are angled for easy access, offering better control. Pack contains: - 4 x 1.2 ml Syringes. - 20 x Blue luer lock needle tips.