Good quality product, which arrived quickly. Easy to fit, no need to be an engineer, anyone with DIY skills can fit themselves. Product now has been installed for a few months and working well. Would recommend as a replacement to do away with the need to use a key indoors.
I needed to get a new cylinder for a door lock, and decided on a thumbturn one as we sometimes forgot to get the key from the lock so we couldn't unlock from the outside and had to use another door. I tried the local major chains but they had a limited range of sizes and none were what I needed. I did a Google search and Safe were seemed to be the best the came up. Checking their website they had a much larger range, including the size that I needed. Ordering online was easy and the new tumbler arrived on time and was a perfect fit.