Klein Tools Skribes™ XL Chisel Tip Black Permanent Marker is designed for tough jobsite conditions. With a thick, durable chisel tip, it creates extra bold, long-lasting lines for marking and labeling. The professional-grade ink writes effortlessly on wet, dry, oily, and abrasive surfaces, resisting clogging for smooth marking. 72-Hour extended cap-off life helps the marker from quickly drying out. The anti-roll triangular shape and built-in hard hat clip keep it easily accessible on the job.