Euro Profile V10 Double Cylinder 70mm – Keyed to Differ

A 70mm Euro Profile Double Cylinder is one of the most widely used security components in the architectural hardware industry. Perfectly sized for standard 44mm to 54mm thick doors, this 70mm Euro Profile Double Cylinder provides “Double” functionality—meaning it requires a physical key to operate the lock from both the internal and external sides.

This is the “gold standard” for security on residential front doors, commercial office entries, and any door featuring glass panels where a thumbturn would be a security risk.

The 70mm length is uniquely versatile. It is most commonly found in a 35/35mm symmetric split, meaning the central fixing hole sits exactly in the middle. This ensures the 70mm Euro Profile Double Cylinder sits flush against the handle backplates on both sides of a standard timber or uPVC door.

Key Benefits of the Double Cylinder Configuration

• Enhanced Glass Panel Security: If your door has a window or side-light, an intruder cannot simply smash the glass and reach in to turn a knob. They would still require a physical key to retract the bolt from the inside.

• Anti-Snap Engineering: High-quality 70mm cylinders are designed with a “sacrificial cut.” If a burglar attempts to “snap” the lock, the cylinder breaks at a predetermined point, leaving the central cam locked and the internal mechanism unreachable.

• Pick & Drill Resistance: Modern 70mm barrels utilize hardened steel pins and “mushroom” drivers, making traditional lock-picking and drilling extremely difficult for even experienced intruders.

• Keyed Alike Convenience: Multiple 70mm cylinders can be “Keyed Alike” by a locksmith, allowing you to use one single key for your front, back, and side doors.

Understanding the Measurements (The 35/35 Split)

Euro cylinders are measured from the center of the fixing screw hole to each end of the barrel. For a 70mm total length, you will typically find:

1. 35/35 (Symmetric): The most common size for standard 44mm timber doors. The screw hole is perfectly centered.

2. 30/40 (Asymmetric): Often used for uPVC or composite doors where the locking mechanism is offset due to thicker external moldings or weather-stripping.

Pro-Tip: To ensure maximum security, a Euro cylinder should never protrude more than 3mm from the face of the door handle. If it sticks out further, it provides “purchase” for lock-snapping tools.

Technical Specifications

Recommended High-Security 70mm Cylinders

For ultimate peace of mind, the Yale Platinum 3-Star is the industry leader. It is Sold Secure Diamond approved and TS007 3-Star rated, meaning it provides the highest level of protection against snapping, drilling, and bumping without the need for additional security handles.

If you are looking for a reliable, professional-grade cylinder for internal or lower-risk doors, the 70mm Euro Profile Double Cylinder offers exceptional value. 70mm Euro Profile Double Cylinder provides robust anti-pick and anti-drill protection with a smooth, 6-pin operation that far exceeds standard budget barrels.

Maintenance for Longevity

To keep your 70mm Euro Profile Double Cylinder operating like new, never use oil or WD-40, as these attract dust that can jam the internal 6-pin springs. Instead, use a dry graphite lubricant or a specialized PTFE lock spray once a year to ensure the key slides in and turns with zero resistance.

Secure your doors with this 70mm Euro Profile Double Cylinder, engineered for smooth operation, durability, and reliable locking. Each cylinder comes with its own unique key, making it ideal for residential, commercial, and multi-unit properties where independent access is required. The 70mm Euro profile size ensures a precise fit for standard doors, providing a secure and practical locking solution.

Manufactured from premium materials, this 70mm Euro Profile Double Cylinder resists tampering, forced entry, and everyday wear, ensuring long-term performance. Its keyed-to-differ feature allows each cylinder to operate independently, making it perfect for apartments, offices, and multi-door installations. Easy to install and built for consistent use, this double cylinder lock combines strength, convenience, and peace of mind.