Carbide scriber pen is perfect for scribing, marking lines and etching with sharp and carbide tips on wood, glass, ceramic tile, marble, metal sheet and etc. Convenient and safe for various usage with solid and sharpened carbide scribe tips and protective caps. Easy to mark and scribe line on hard material. Made of tungsten carbide, the scriber tips are sharpened, heavy duty and effective for scribing and marking. With polished finish, the machinist scribe is designed for non-slip grip. You can use the engraving pen to mark clear lines on many kinds of hard materials. Great engraving pens, enough quantities can be meet your daily use.