Original HUWIL bar channel key type 1555 with lock code 3001.The locking number 3001 is part of the locking circle [SK: H-3].Original key from the manufacturer with lock code 3001.At HUWIL keys and cylinders are numbered - following locking circles (SK) are available: locking circle from number 2001 to number 2205 -> available from us as [SK: H-2], locking circle from number 3001 to number 4000 -> available from us as [SK: H-3], locking circle from number 5001 to number 6000 -> available from us as [SK: H-5],locking circle from number 3A to number 3Z -> available from us as [SK: H-3A6Z] - 3A to 3Z, locking circle from number 4A to number 4Z -> available from us as [SK: H-3A6Z] - 4A to 4Z, locking circle from number 5A to number 5Z -> available from us as [SK: H-3A6Z] - 5A to 5Z, locking circle from number 6A to number 6Z -> available from us as [SK: H-3A6Z] - 6A to 6Z.