Kamtop Sash Jammers Blockers with Keys - 4 PCS Window Restrictor Jammers, Zinc Alloy Window Locks Sash Blockers for UPVC Doors and Windows

I bought these with key along with a set of other from another manufacturer without key. I found these seemed to be the most sturdy and well made so in the end I returned the other ones without keys I’d bought and bought another load of these with keys instead. They’re easy to fit and have provided extra protection & peace of mind re: my upvc window security. Items also dispatched & arrived on time. Product & seller recommended.

Do what they were bought for.

Absolutely what I was looking for. Very strong and easy to install, one very happy customer.

Item arrived as described recommend seller and would buy from again A *****

Why we keep buying rubbish from China is beyond me, I've brought 2 boxes of these and they will be going back. 1 box there was 1 that had already broken inside, when they are on your door or windows the locks are awful and one of them the key has broken off inside and had to get an hammer to open the door.

Secures the windows well and easy to fit

Works well

If you do not have enough security it may help reduce home insurance as they are key lockable.For PVC frames I would find better screws as this is the weak link, normal ones could perhaps be forced out of hole in plastic. Great price, do the whole house, windows and doors.

Alles super, einfache Montage und ein noch sicheres Gefühl.

He comprado este producto como seguridad , para evitar apertura ventanas por niños , ya que disponen de cierre con llave .

Idéal pour sécurisé fenêtre porte fenêtre facilement

Gute Qualität , nur die schrauben sind ein bisschen kurz.

s'installe facilement et tres pratique pour bloquer des fenêtres de camping car