[Closed] Tell me about bearing removal/fitting tools

I'd like to get a bearing removal and fitting tool(s) to change wheel and frame bearings, but know nothing about them. Is what i want a bearing "drift" tool? Are there different sizes for each bearing? Will one tool do most bearings? eg
[url= http://www.amazon.co.uk/dp/B0031SQKUM/ref=asc_df_B0031SQKUM9300129?smid=A3P5ROKL5A1OLE&tag=googlecouk06-21&linkCode=asn&creative=22206&creativeASIN=B0031SQKUM ]this[/url]?

I made a threaded rod press which just about worked but then I used a proper headset press and decided I definitely "need" the tools! It's a lifestyle.