PorceLock® is the perfect companion for porcelain and crown and bridge repair. PorceLock® is a buffered 2.5% hydrofluoric acid gel that is both safe and effective for intraoral and extraoral use. PorceLock® creates bond strengths three to five times greater than treatments using silane alone. It achieves bond strengths approaching those of etched enamel after a 3-5 minute treatment. For repair of porcelain surfaces, the use of PorceLock® and Cerinate Prime® with Ultra-Bond® allows you to achieve strong and reliable intraoral bonds. PorceLock's® gel viscosity and needle tip dispensing allows you to place the gel only where you want it Contains: 3 - 1.75ml Syringes of Etch 10 - 18g Dispensing Tips