KB 4T-6/S105 KB 4T-6-RS 4.4T KB 4T-6-WKB 4T KB 5T-1.8-RS 4.5T KB 5T-10 KB 5T-1-SB 5T KB 5T-2 KB 5T-2-SB 5T KB 5T-2-WKB 5T KB 5T-4