Cylinders - Traditional UNION offers a variety of traditional cylinders to meet the demands of every application. Cylinders are available in four different variations. Downloads Introduction - Traditional (.pdf, 4.6 MB) CY-SP-EP-0K - Euro Profile Single Cylinder CY-SP-OP-0K - Oval Profile Single Cylinder CY-SP-OP-KK - Oval Profile Double Cylinder CY-SP-OP-TK - Special Oval Profile Key & Turn Cylinder CY-DP-EP-KK - Dimple Key Cylinder CY-SP-EP-KK - Euro Profile Double Cylinder CY-SP-EP-TK - Euro Profile Key & Turn Cylinder