I was a frequent visitor here in our recent house renovation. Earlier I would go to the W S Perera and Sons.
They have a wide selection of hardware products. Other than the usual I have also noticed they have power tools. I found it useful as I wanted few drill-bits and it saved me a trip to Malabe.
The staff are helpful. They offer delivery but I recommend you get your own. Once they promised me to send in an hour and it didn't reach till evening.
If you are around Thalahena, its either this store or W S Perera and Sons be your best options.
Good service. Computerized bills. Very busy place.
They don't have some common items
They have lot of varieties of relatives stuff, if they could be more neat about arranging goods, that would be nice.