A large and diverse selection of excellent shaker (and tambourine) material
I'm not sure about complete, but it is an incredibly comprehensive set, and I'm not sure why I'd need any other shaker products after purchasing this one. You get more shakers than you can shake a stick at (ahem).
You get two parts in the package; loops and samples. You can buy them as two individual products if you wish, but you save if you purchase the complete caboodle.
The loops are very nice, I can simply drop one into Reaper and it's there and shaking in time to my track, whatever the tempo.
The sample part comes with Kontakt and other popular sampler format instruments, so you can build patterns from individual hits mapped to keys. Multiple velocity layers and round robin samples really bring these instruments to life. I am well satisfied with how 'deeply' sampled they are.
The sound is top notch quality through and through, and the price is very reasonable for what you get (33 shaker and tambourine types, thousands of loops, well over 3 gigabytes of content)