With it's tapered conical end (6 mm - 1 mm diameter) fitting the smallest of loops to the largest. The wider dual tapered elliptical end (15 mm - 10 mm & 6 mm - 2 mm) with it's radius ground edges will allow you to obtain the perfect cutting edge on any type of knife. 

The sharpener comes to you in a heavy duty PVC pouch.

It is important to keep your diamond sharpener clean and unclogged. Always use a petroleum-based liquid on the sharpener during use.