Mul-T-Lock MTL300 Break Secure 3XP Pro Euro Cylinder - Keyed Alike Pack

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from £42.54
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Customer Reviews
Rated 5.0

/5

Rated 5 / 5Rated 5 / 5Rated 5 / 5Rated 5 / 5Rated 5 / 5
3 Reviews

100%

Recommended
this Product
Ease of Use
Out of 5
5
Build Quality
Out of 5
5
Rated 5 / 5Rated 5 / 5Rated 5 / 5Rated 5 / 5Rated 5 / 5
Anonymous Verified Customer

Great locks, keys are easy to insert unlike some locks. Keys are good especially with the plastic end. Highly recommended.

Read more
Rated 5 / 5Rated 5 / 5Rated 5 / 5Rated 5 / 5Rated 5 / 5
Jo Verified Customer

This cylinder lock is of excellent quality, and I highly recommend it.

Read more

See all reviews

Build your own unique set of keyed alike cylinders. Add as many cylinders as you like and they'll all work from the same key.
View Full Specification
  • Each cylinder will be keyed alike at no extra cost.
  • Cylinder pack will include 2 keys.
  • 27 sizes to choose from.
  • Size to Centre (ext): From 36 to 76mm
  • Size to Centre (int): From 10 to 76mm
  • Anti-Snap protection by way of sacrificial snap section.
  • Employs Anti-Pick, Anti-Drill & Anti-Bump for extra security.
  • Maximum security TS007 3 Star Rated.
  • "Made to Order" Not covered by 30 Day Returns Policy.
  • Thumbturn available.
  • Extra keys available at checkout.
Ref: MTL3003STARKA Compare Sizes

See all reviews

Customer Reviews
Rated 5.0

/5

Rated 5 / 5Rated 5 / 5Rated 5 / 5Rated 5 / 5Rated 5 / 5
3 Reviews

100%

Recommended
this Product
Ease of Use
Out of 5
5
Build Quality
Out of 5
5
Rated 5 / 5Rated 5 / 5Rated 5 / 5Rated 5 / 5Rated 5 / 5
Anonymous Verified Customer

Great locks, keys are easy to insert unlike some locks. Keys are good especially with the plastic end. Highly recommended.

Read more
Rated 5 / 5Rated 5 / 5Rated 5 / 5Rated 5 / 5Rated 5 / 5
Jo Verified Customer

This cylinder lock is of excellent quality, and I highly recommend it.

Read more

See all reviews

Details

Secure all the doors in your home with one single key

Our Keyed Alike Cylinder Packs make it easy to create your own custom cylinder lock and key solution - allowing up to 99 keys to unlock any combination of different-sized cylinder locks.

The possibilities are endless - from having one key per family member unlocking the front door, kitchen and patio doors, right up to large-scale company storage keying options.

1. Select Cylinder

Choose from cylinders offering standard, medium or high security.

>

2. Choose Sizes

Decide how many doors to secure and select your cylinder sizes.

>

3. Get Secure

Enjoy the security and convenience of a single key for all your doors.




Mul-T-Lock MTL300 Break Secure 3XP Pro

The Mul-T-Lock MTL300 Break Secure 3XP Pro Euro Cylinder is a premium high-security door lock, engineered to provide exceptional protection against the latest burglary techniques. Featuring advanced 3XP patented key technology and certified to the latest TS007-1:2024 3 Star standard, it offers outstanding resistance against snapping, drilling, picking, bumping and freeze attacks. Supplied with 2 high security dimple keys, the MTL300 3XP Pro delivers trusted security for both residential and commercial properties.

TS007 3 Star Rating

TS007 3-Star & Sold Secure Diamond Certified

Mul-T-Lock MTL300 Break Secure 3XP Pro achieves the latest TS007-1:2024 3-Star rating, the highest level of security for euro cylinder locks in the UK. This means it has been independently tested to resist snapping, drilling, picking and bumping. It is also Sold Secure Diamond approved, exceeding standard requirements and offering enhanced protection against professional attack methods.

High Security Keys

Each cylinder pack comes with 2 high security double sided keys, with smooth edges, and can be used any side up. These keys are precision-cut for smooth operation and durability. With restricted key control, meaning keys can only be copied with authorisation, reducing the risk of unauthorised duplicates.

Anti-Snap Protection

Mul-T-Lock cylinders are engineered to defend against all common burglary techniques, including:

  • Lock snapping
  • Drilling
  • Picking
  • Bumping
  • Fire and freezing

This multi-layered protection makes the Mul-T-Lock MTL300 an excellent choice for any external access point.

Patented 7-Pin Security

At the heart of the MTL300 Break Secure 3XP Pro is Mul-T-Lock's patented 7-pin mechanism, combining six precision pin tumblers with a unique telescopic pin. This dual-locking technology provides an additional layer of protection against lock picking and bumping, delivering enhanced security beyond that of conventional Euro cylinders.

Drill Protection
Pins

Secured by Design

The MTL300 meets Secured by Design standards, the official police security initiative. This means the lock has been proven to reduce the risk of crime and is trusted by law enforcement backed security schemes.

£5,000 Consumer Cashback Guarantee

For complete peace of mind, the MTL300 Break Secure 3XP Pro is backed by a £5,000 Consumer Cashback Guarantee. In the unlikely event of a successful break-in due to cylinder snapping, eligible customers can claim up to £5,000 towards insurance excess and replacement costs, subject to the manufacturer's terms and conditions.

Drill Protection
Product Diagram with Dimensions
A
B
C
Dimensions
Size Centre (external)
 From 36 to 76mm
Size Centre (internal)
 From 10 to 76mm
Overall Length From 46 to 152mm
Show Imperial »
Play Video How to measure a Euro Cylinder How to measure a Euro Cylinder
Cylinder Lock
Sizes Available
27 (See Sizes)
Security & Ratings
Security Level
Maximum
Anti-Snap
Yes Sacrificial Snap Line
Security Measures
Anti Pick, Pull, Drill, Bump & Freeze
Code Card
Yes
Kitemarked
Yes
TS Star Rating
3 Star (TS007)
British Standard
BS EN 1303:2015
Fire Rating
EN 1634-1 (30 mins)
Secured by Design
YesLicenced by Mul-T-Lock
* Insurance approval may vary due to conditions and location. Please check with your insurance provider.
Features
Symmetrical Key
Yes
Keyed Alike
Yes
Manufacturer Warranty
10 Years
Extra Features
Sold Secure SS312 Diamond Certified
In The Box
Cylinder
Yes
Retaining Screw
Yes
Keys
2 (per pack)
Reviews [3]
Rated 5

/5

Rated 5 / 5Rated 5 / 5Rated 5 / 5Rated 5 / 5Rated 5 / 5
3 Reviews

100%

Recommended
this Product
Ease of Use
Out of 5
5
Build Quality
Out of 5
5
Sort by:
Siu Kei Ma Verified Customer October 2026
Rated 5 / 5Rated 5 / 5Rated 5 / 5Rated 5 / 5Rated 5 / 5
Recommended

The lock are amazing and valuable.

Was this helpful?  

Jo Verified Customer September 2026
Rated 5 / 5Rated 5 / 5Rated 5 / 5Rated 5 / 5Rated 5 / 5
Recommended

This cylinder lock is of excellent quality, and I highly recommend it.

Was this helpful?  

Anonymous Verified Customer September 2026
Rated 5 / 5Rated 5 / 5Rated 5 / 5Rated 5 / 5Rated 5 / 5
Recommended

Great locks, keys are easy to insert unlike some locks. Keys are good especially with the plastic end. Highly recommended.

Was this helpful?  

Siu Kei Ma Verified Customer October 2026
Rated 5 / 5Rated 5 / 5Rated 5 / 5Rated 5 / 5Rated 5 / 5
Recommended

The lock are amazing and valuable.

Was this helpful?  

Jo Verified Customer September 2026
Rated 5 / 5Rated 5 / 5Rated 5 / 5Rated 5 / 5Rated 5 / 5
Recommended

This cylinder lock is of excellent quality, and I highly recommend it.

Was this helpful?  

Anonymous Verified Customer September 2026
Rated 5 / 5Rated 5 / 5Rated 5 / 5Rated 5 / 5Rated 5 / 5
Recommended

Great locks, keys are easy to insert unlike some locks. Keys are good especially with the plastic end. Highly recommended.

Was this helpful?  

Accessories

Add at Checkout

Thumbnail of Mul-T-Lock MTL300 Spare Key

Spare Key

2 Keys are included as standard, but we can cut you a spare.
£14.95
Thumbnail of Mul-T-Lock Lock Lubricant

Mul-T-Lock Lock Lubricant

Advanced lock lubricant in a 148ml aerosol spray with applicator nozzle that cleans, lubricates, and protects to extend the life of your high security locks.
£17.99
Delivery

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Read more about delivery on our Delivery & Installation Guide and FAQ
All prices shown are inc. VAT.
Returns

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This item is "Made to Order". Therefore it is not covered by our 30 day Returns Policy and CANNOT be returned.
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Sizes Available
Size
(External)		 Size
(Internal)		 Size
(Overall)		 Thumbturn Colours
363672Yes
364177
364682Yes
365692
371047
413677Yes
414182Yes
414687Yes
415192Yes
415697Yes
421052
463682Yes
464187Yes
464692Yes
465197Yes
4656102Yes
4676122Yes
513687Yes
514192Yes
514697Yes
5151102Yes
5171122
563692Yes
564197Yes
5646102Yes
6141102Yes
7646122Yes
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