I'm a HUD Virgin. This is my first time so be gentle...
These are great if you already own a Hand Grinder. Anyway, here's some info from the site.
Sturdy construction with cast iron base
With adjustable mount and clamp
For cutting discs (mm): 115 and 125
For most common one-handed angle grinders
With spark guard
Base size (cm): 24 x 19 x 2