2 pack Yale Superior Keyed Alike Euro Cylinder UPVC Chrome Lock 1 star 40/50 Yale Superior 1 star polished chrome euro cylinder pair 40/50 keyed alike with 6 high quality and super strong keys and security key card to order more keys if required- protection is both sides so can be fitted with 40mm or 50mm to outside - These are one of the best and most secure standard available - Kite marked - Anti-snap - anti-drill - anti-pick - anti-bump complete with fixing screws - easy to change from existing cylinders in 5 minutes.
eBay