This Marks 3/4-inch diameter turnpiece Mortise Deadbolt 30 K/3 is a reliable option for securing your commercial or single-cylinder deadbolt. The blue color adds style to your door hardware, while the 1-1/4-inch diameter cylinder hole ensures a sturdy fit. This deadbolt comes with keys for added convenience. The brand of this deadbolt is Mortise, and it is suitable for commercial and single-cylinder use. It comes with the cylinder and the keys, making it a complete package for your security needs. This item falls under the categories of Commercial Door Hardware, Commercial Doors & Door Hardware, Building Materials & Supplies, and Business & Industrial.