EVVA 4ks Sydney

EVVA 4KS is patented, springless and anything but conventional. In contrast to other locking systems, the EVVA Locks and it’s locking elements in the cylinder are sliding along the tracks of the key. Minimal force is needed to insert the key due to lack of spring resistance.

A total of 12 springless locking pins are brought into specific positions via active placement of the 6 curve millings on the key and are scanned via 2 control bars. A locking bar in the cylinder controls the key’s additional coding.

The 4KS key in EVVA locks are scanned a total of four times before a cylinder can be opened, offering the highest security. The combination of a nickel-silver cylinder and carbide components instead of brass is why 4KS locks have been cycle-tested to 100,000 operations

Contact us today to find out more about EVVA locks or browse our services such as security cameras.

EVVA 4ks Sydney

Controlled Protectionwith EVVA LOCKs

  • It is a requirement that 4KS dealers store their components in a secure location within their business. This must include restricted access for their own staff.

  • In addition, new keys can only be ordered by the system owner by supplying proof of identity that matches the dealer’s record.

  • EVVA 4KS key blanks are only produced at EVVA and the distribution of the keys to authorized dealers is tightly controlled to ensure enhanced security.
  • All master key coding by the dealer must be produced using an approved master key design software.

Legal Protection with EVVA 4ks

  • The patent on the 4KS system is valid until 2035. Through patents and licensing, EVVA restricts the manufacture of 4KS keys to a number of authorized locksmiths.

Technical protection with evva locks

  • The 4KS key is technically difficult to reproduce without an advanced level of specialist knowledge.
  • Key machines capable of cutting 4KS are licenced and require EVVA approval to be enabled to cut 4KS.
  • Unlike many master key systems, key machines are not able to decode the keys.
  • 4KS cannot be decoded by key matching.
4KS Cylinder Ratings

Locksmith Services

Locksmith Services for Sydney & the Sutherland Shire for over 20 years

Websters Master Locksmiths provides an extensive variety of locksmith services including electronic security, window security, safety compliances, 24/7 emergency locksmith services, key cutting, remote controls and more.

Master Locksmith Cronulla - Master Locksmith Sutherland Shire
Highly trained staff in all aspects of the repair and replacement process of door servicing.

Why Choose Us?

We provide a unique 24-hour emergency service for all your needs; from being locked out of a vehicle to replacing keys for your house.



With a wide range of products, the Websters team can assist you however you need.

Locksmiths and On Site Key Cutting

Master Locksmiths

We are members of the Master Locksmiths Association Australiasia (MLAA) and the Australian Government – Security Construction and Equipment Committee (SCEC).

ABOUT MASTER LOCKSMITHS Master Locksmith Cronulla - Master Locksmith Sutherland Shire

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