I would use a small concrete drill and small plastic inserts with suitable hooks, or you can use the plastic inserts with stainless steel hooks. I have done several of these type installations on our house. If these will be exposed to rain, I add a silicone sealer before inserting the plastic insert, and then after the insert is in place to seal the hole as much as possible.
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Pennsylvania, for 60+ years, most recently, Allentown, now TV. 
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