You can download
Brtools 7.20 is available on the servicemarket place at the following link
Support Packages and Patches – Entry by Application Group
SAP Kernel 64bit
Choose your OS
DBATL720O10_1-20005243.SAR DBATOOLS Package for Oracle 10g and 11g
The oss note 12741 is also useful for download paths for all released Brtools.