Unlike their Pro Case, which I felt was more cheaply made and not heavy duty (like they advertise),
their 4" linking rings are a great value for the price. Previously, other manufacturer's were
selling chrome 4" linking rings for $60-$100!
So far these seem well made and durable, and
the velvet bag is a nice addition.
The online video has some decent moves to get you
started. On the L&L WGM Linking Rings DVD Dan Fleshman also has a nice close-up linking rings
routine you may want to check out.
p.s. You could also use the single ring for ring and
rope routines.