Adopt standard size thread design, easy to install and tighten, not easy to fall off. Suitable for silicone caulking tools, used as installation tools for doors and windows, such as repairing gaps, wall tiles, floor tiles and floors. Features - Color: Assorted color. - Material: Silicone. - Size: 11.00 x 5.00 x 2.00cm/ 4.32 x 1.97 x 0.79 inch. - Silicone nozzle, stops nozzles becoming blocked and increases the shelf life of sealant. - The nozzle incorporates an additional thread, to which the screw can be fitted when the is not in use to keep air tight. - Using the additional screw will prevent the silicone from hardening in the nozzle and will prolong the shelf life. - Use with silicone, sealant, mastic, caulk etc. Screw secured in place by threaded nozzle. - Air tight prevents hardening inside the nozzle. Nozzle can be cut to desired size and helps prevent nozzle blockage. Package list: 10 x caulk nozzles