Gst on old office items - laptops, furniture, etc.

We purchased some office items including Laptops, Office Furniture, etc. for regular day to day work in our Software Development operations, and claimed GST Input Credit for the same at the time of purchase.

Now, we wish to sell these items to third party as second hand items. What will be the GST Treatment ?

Is GST Applicable for sellling old office items also ?

We don't have a GST registration in these categories, since this is not our regular line of business.

Thanks