Check the listing for details. Lansky Deluxe Turnbox Crock Stick Knife Sharpener. Condition: New. Listed at 28.09 USD. The TurnBox family is a very stable and compact knife sharpening system. It works well in the kitchen and it quickly breaks down for storage in a drawer. It only takes a few swipes to maintain an edge (a bit more if you have a really dull knife).