General Tools 88CM Tungsten Carbide Scribe and Magnet Tungsten carbide tip marks hard materials including hardened steel, ceramics and glass Aluminum/nickel/cobalt alloy permanent magnet picks up small parts and retrieves steel chips from hard-to-reach places Scriber point reverses for safety Scriber features a tungsten carbide tip that marks hard materials including hardened steel, stainless steel, ceramics and glass Permanent magnet on the etching tool picks up small parts and retrieves steel chips from hard-to-reach places Engraving pen comes with a chuck for reversing tungsten carbide point when not in use; scribe is an essential machining tool Knurled aluminum handle provides maximum control and comfort; simply apply layout fluid and scribe away Scribe tool point is replaceable; convenient pocket-clip allows you to always keep the tool handy