Cover every step of your pen making process with this all-in-one set of our most trusted cyanoacrylate glues. Use 1 oz. Insta-Flex Super CA to quickly bond pen tubes to blanks, and 1 oz. Ultra-Cure CA for a fast, durable finish. Fill hairline cracks with 1 oz. Super Thin Crack Filling CA, and reach for 1 oz. Medium Gap Filling CA for controlled gap-filling. For extra-strength assembly, use Thick Gap Filling CA. Finish strong with Extender Tips for clean, precise application.