Don't believe the positive reviews. There is an inherent design flaw that allows the blade to fly off the tool. The blade is screwed onto the main body of the tool by tension. If the tool rotates at high speed, the clamping screw will loosen and fly off the tool, which can result in death. When the blade accidentally detached from the tool, it flew off with such force that it pierced a piece of wood in my house (see picture). ***** Extremely dangerous ***** Attention buyers! The manufacturer must add a guard that prevents the blade from detaching from the tool.