Where do get a Line of Credit on owned rental properties

[Rick Hoskins]

Hello I have been buying rental properties condos and single family homes for about 6 months now. I bought them with cash so they are owned free and clear. Im starting to run out of cash and started thinking is there a bank that will lend on the equity of these rental properties? What im looking for is a line of credit something i just write a check out of an account. Does anyone know who offers this kind of lending with the lowest rate?