Starbond KE-150 Black Medium, PREMIUM Rubber Toughened CA - Super Glue Kit with Extra Bottles, Caps, and Microtips, 16 oz. (Bulk size) PREMIUM CYANOACRYLATE SUPER GLUE - LAB TESTED FOR OPTIMAL PERFORMANCE: High performance industrial grade adhesive. Black Medium CA is used to penetrate narrow slots, bond closely-fitted parts, quick repairs on black surfaces, and for turquoise inlays. EXTRA SUPPLIES: (2) applicator caps, (1) clog-free stopper, and a bag of micro-tips for precision. The extra applicator caps are in case of future clogs, the clog-free stopper has a tiny pin to prevent clogs, and micro-tips provide the perfect extension for tiny cracks. "ACCENTING" ADHESIVE: ideal for hiding imperfections, filling dark voids, and accenting specific areas in your projects. PROPERTIES: Viscosity: 150 cPs (meaning the thickness of the liquid is similar to that of motor oil). Penetrating abilities of up to 0.006" in size. SUPERIOR SHELF LIFE: When well kept, our product can last several years in a cold environment. Just make sure to store the bottle under 40F before AND after use to QUALIFY FOR OUR 20 month shelf life warranty. If product does not last, we will replace that bottle free of charge.