Discover the pinnacle of home security with our Ultion Half Cylinders category. Featuring cutting-edge technology and robust design, these locks are engineered to withstand the most sophisticated break-in attempts. Whether you're looking to upgrade your existing security or fortify a new property, our Ultion Half Cylinders offer unparalleled protection and peace of mind. Explore our selection to find the perfect fit for your needs and experience the ultimate in home defence. The Ultion £5000 security guarantee applies if a burglary takes place within 5 years from the date of installation and entry was achieved by snapping an Ultion lock. Activation can be completed within 28 days of installation.