They used to have a catalogue that was over an inch thick that contained all the data and specs on a particular component which was streets ahead of Dick Smith Jaycar Altronics and Tandy. Now of course its all on CD Rom or a website as the cost of producing it was so high.

I have purchased a few parts from them over the years.
We use them at work as a supplier, they still have the thick catalogue only it is about 3" thick now