A first rate product, as far as I know the only one that can offer the level of security expected by insurance companies. This was a replacement lock for one of the less secure locks that could be removed or broken into quite easily ( see videos on You Tube). This company offer the product at a very competitive price with good service and support. Fitting the lock as a replacement takes only a few minutes and needs only a pozi screwdriver. The thumb turn needs a very small Allen key (supplied) and needs care to ensure you don't drop the screws, as finding them once dropped could present problems