DMT Diamond Whetstone DMTW6EP. This blade Sharpener from the expert product specialists at DMT feature the signature polka-dot pattern that traps metal debris to ensure clean continuous edge contact while the superior diamond does its work. For a superb way to make sure your knife is is ready for action choose the DMT Diamond Whetstone. Package Contents: DMT Diamond Whetstone DMT DMTW6EP: Diamond Whetstone