LC Block-Out Resin 4-Pk. Kit: 4 x 1.2 ml Syringes & 20 Black Mini Tips. Low viscosity for easy flow.. Blue pigment for easy visibility. Provides reservoir space for bleaching trays. Also useful for other laboratory procedures such as model and die repairs. Must be light cured and is not intended for intraoral use. 4 - 1.2 ml syringes & tips