If you’ve fitted enough mortise locks, you already know the cylinder is the heart of the whole setup. The Ebco Brass Zen Cylinder 70mm Key-Key NB is built for those jobs where you want dependable hardware without babysitting the lock later. It’s a double-key mortise cylinder, meaning both sides need a key — handy for external doors or controlled access areas where you don’t want a thumbturn inside. And yeah, that matters a lot on a job site when security isn’t optional.

The body uses solid brass construction with a clean brushed nickel finish (NB), so you’re not dealing with cheap plated metal that flakes after one monsoon season. In practice, brass cylinders hold tolerances better, turn smoother, and don’t seize up as easily with dust or humidity. Here’s the thing — when a cylinder works smoothly from day one, callbacks drop. That alone makes installers sleep better.

Key Features:

• Double Key Operation - Requires a key on both sides for stronger access control and better exterior security.
• Solid Brass Body - Handles daily wear, humidity, and long-term mechanical use without warping or rusting.
• 70mm Standard Length - Fits most common Indian mortise door preparations with minimal adjustment.
• 5-Pin Tumbler Mechanism - Provides reliable key matching and helps resist casual picking attempts.
• Brushed Nickel Finish - Gives a clean architectural look while hiding scratches from regular use.

Applications

This cylinder slots straight into standard mortise lock bodies, which makes it a straightforward replacement during refurb work or new installations. You’ll typically see it used on main entry doors, office cabins, shop shutters with wooden doors, or anywhere both sides needing a key actually improves security. But it’s just as comfortable on residential doors where the owner wants tighter control over who opens from inside.

Why Choose This Model

What really stands out is the balance between contractor-friendly installation and long-haul durability. The Ebco Zen hardware series is known among installers for consistent machining, and this 70mm double-key format keeps things simple when working with thicker doors. And honestly — when the key action feels smooth instead of gritty, customers notice immediately. The bottom line is fewer service calls, less adjustment, and hardware that behaves the way it should.

Technical Specifications Explained

• Material: Brass - Gives the cylinder corrosion resistance and stable internal alignment for smoother long-term turning.
• Size: 70mm - Designed for thicker door profiles and standard mortise cutouts common in modern builds.
• Operation: Key-Key - Both sides use keys, preventing inside unlocking without authorised access.
• Pin System: 5-Pin Tumbler - Offers dependable everyday security suitable for residential and commercial installations.
• Finish: Brushed Nickel - Reduces visible wear while matching contemporary handles and door hardware.

Who Should Buy This

If you’re a carpenter, contractor, locksmith, or interior installer, this is the kind of cylinder you keep in stock because it fits most standard jobs without surprises. It’s also a safe bet for builders handling apartment projects where consistent hardware matters more than fancy gimmicks.

And for property owners? Simple. If you want a reliable double-key security cylinder that installs clean, turns smoothly, and won’t start acting up after a year — this one does the job without drama. Sometimes boring reliability is exactly what you want in a lock.