UNION keyULTRA™ Patented Cylinders keyULTRA™ is UNION's leading patented six pin cylinder system made in the UK. Utilising innovative technology this system offers secure patent protection until 2028 and is now exclusively available in a choice of six high specification finishes. Download Dimension Tables - keyULTRA (.pdf, 187 kB) SN-SC-PL-CH-SB-AB - NEW High Quality Finishes J-TURNS - NEW Thumbturn Range KUK - KeyULTRA™ Keys KUES / KUOS - KeyULTRA™ Single Cylinder - Euro or Oval KUED / KUOD - KeyULTRA™ Double Cylinder - Euro or Oval KUET / KUOT - KeyULTRA™ Key & Turn Cylinder - Euro or Oval KURIMCYL - KeyULTRA™ Rim Cylinder KUSCANOUT - KeyULTRA™ Scandinavian Oval Outer KUSCANIN - KeyULTRA™ Scandinavian Oval Inner KUSCREWCYL - KeyULTRA™ Mortice Screw-in Cylinder