ING Direct has issued A$1 billion of residential mortgage-backed securities, after launching the transaction at $500 million earlier this week.Yesterday, the bank provided pricing details of IDOL Trust Series 2013-1. It will pay 95 basis points over the one-month bank bill swap rate on the $930 million A1 tranche. The tranche has a weighted average life of 3.2 years.Pricing on the $20 million AB tranche, which has a weighted average life of 6.3 years, is 165 bps over swap.Pricing on the $25 million AB tranche and the $25 million B tranche was not disclosed.ING Direct's treasurer, Michael Witts, said in a statement that 21 investors had participated. Around one-third of these were offshore investors.The Australian Office of Financial Management did not invest in the issue.Macquarie Bank was the arranger. Macquarie, Citigroup Global Markets, ING Bank NV (Singapore branch) and Westpac were joint lead managers.