The is a typical set of closeup filters (lenses. A kit like this will generally come with a +4, +2, and a +1 filter. This set is the Hoya HMC, they are multi-Coated and very high quality. This set comes with a very nice case to hold all the lenses.

Images shot with closeup filters.
http://www.pbase.com/image/2200604 +2 plus a +4
http://www.pbase.com/image/1594256 +2 only

By Bill Huber