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ProSecure High Security Cylinders

Sold Secure Diamond Grade, Secured by Design & 3 Star Kitemarked.

BSI ProSecure 3 Star Cylinder banner

/ Sold Secure Diamond Grade

The toughest security standard on the market

ProSecure enhanced security cylinders are the most secure on the market, designed to withstand all common methods of attack. Manufactured from brass and hardened carbon steel, combined with intelligent security features to provide maximum security.

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    Unique Sacrifical Point for snap secure protection

    High Strength Carbon Steel Block resists snapping, deplugging and protects the cam from manipulation

    Unique Registration Code laser etched onto the cylinder for key copy control

    / Intelligent Security

    If cylinder snapping is attempted, the snap secure sacrificial point sets an interlocking cam mechanism into action, preventing the cylinder being unlocked from the outside. The cylinder remains operable from the inside for the home owner, allowing them to unlock the door and exit the property.

    3 STAR CYL 31_V2
    Closed profile technology with dimple key security
    Unique sacrificial point for snap secure protection
    Steel security pins for anti-drill, anti-pick & anti-bump protection with 180,000 effective differs
    Full range of sizes and variants including thumbturn
    Restricted profile dimple keys and key copy protection.

    To register your keys click here.

    / Tested and approved

    Tested by the Master Locksmith Association (MLA) to meet the stringent requirements of Sold Secure Diamond Grade, Police Preferred Specification – Secured by Design approved and British Standards Institute (BSI) 3 Star Kitemarked.

    sold secure logo Cylinders Diamond
    sbd logo in box for website

    Market-leading testing and guarantees

    10 Year Mechanical Operation

    Mila guarantees the mechanical components of this product for 10 years, subject to our recommended level of regular maintenance.

    See our terms and conditions here.


    PAS24: 2016 is the current security standard for door sets in the UK. It certifies that a particular door, frame, lock and hardware set or window and hardware set has withstood a series of physical tests based on the common methods of burglary.


    Enhanced Security for Replacement door cylinders and Security Hardware

    TS007 is a Door and Hardware Federation (DHF) specification introduced to try to combat the problem of lock snapping.

    BSEN 1303

    BS EN 1303:2012 classifies cylinders for locks using an 8-digit coding system. Each digit refers to a particular feature of the product measured against the standard’s performance requirements.

    Secured by Design

    The Official Police Security Initiative for designing out crime. This product is a Police Preferred Specification and is Secured by Design (SBD) approved.

    Contact our Sales Office

    T. 01327 312 400 | E.