CISA Astral S - Euro Thumbturn Cylinder 40 - 55 (95mm Polished Brass)

The Astral S appears to be sturdy and was easy to fit. You may need to cut down the bolt that secures the lock to the door. I used the old bolt to save doing this.

The orientation of the lock was horizontal rather than vertical but that doesn’t present a problem. Can’t comment on security as until someone tries to force it you can’t know.

This is ideal cylinder to use if you have elderly relative who keeps leaving key in lock on inside of door! This is the only decent secure cylinder I could find that has a clutch inside so that we can still unlock the door with key from outside if a key is in lock on the inside. Perfect - especially in an emergency situation where we need to get in house quickly.

We bought the CISA Astral S - Euro Thumbturn Cylinder 35 - 35 and are very happy with it. It was very easy to install, arrived in a good time, great quality and comes with 3 sets of keys. I originally ordered the wrong size and Safe were great helping me with the return and getting the right size out. Would recommend, especially the thumbturn mechanism - easy to use.

Excellent secure lock, easy to fit as its a Euro lock

No issue with installing the lock, behaves just like any other cylinder locks. The thumbturn was a nice upgrade from the mortice lock I had before. Keys seem sturdy, though had to remind family that the key hole should point to the left (as they're used to it pointing down), lest they try to yank the key out.

I've bought this lock because I wanted to be able to get in from the outside even if a key was into the lock on the inside, and that works perfectly. It's of course more secure than an ordinary lock as the key cannot be duplicated without the card.

Very easy to fit with just one screw to take out and screw back in.

Difficult to say how secure it is against break ins: I can only trust the description for that.

It is a bit on the expensive side: I've bought a similar product in Spain for about half the price.

Very happy with the advice given for a suitable product. I needed quite a specific cylinder in tens of dimensions and features and they helped me find exactly what I needed. Did exactly what I was looking for - very happy all round. I would definitely still advise and return to Safe.co.uk in the future.

I found the advice over the phone helpful. The unit is perfect and matches the handle although the handle is a different make. I needed just a bit of help fitting it, as it is not something I have done before (pensionable and female, that's my excuse). Thank you for prompt delivery.

The cylinder was a perfect fit, flush with my handles both sides for added security and assists in preventing cylinder snapping.

I have used 6 pin locks in the past, but this is a totally different product. The build quality is good and there is no possibility of "picking" it like with a standard Euro lock so I'm totally satisfied that the small price difference is worth it to upgrade the security to this level. Fitting is extremely simple and it can replace any standard Euro lock in less than 5 minutes, so totally happy with this purchase. Safe is the best value place to get them as well.