10 Pcs Long Head Deep Hole Marker - Long Nib Markers, Multi-purpose Deep Hole Marker Pens, Quick Dry Waterproof Colorful Carpenter Pen Markers for Construction Bathroom Woodworking

great pen, perfect for marking bottom of deep holes with marks close to sides for true hole marking

Worked great and the thin line is easy to see when cutting.

Awsome, great for tracing holes and patterns!

These are great for marking metal and wood. The fine tips help make measurements more accurate than a bigger tip type sharpie. The long reach works good marking holes. Nice coworker gifts too!

Great for marking holes to drill. love how deep you can mark it

Works good durable Mark thickness is just right riding quality is good and the colors make it visible on any surface

Several of the pens became unusable a short time after opening (1-2 weeks) and 3 were unusable out of the box. I'll not be buying these again. While they were usable, they wrote well, but their inability to be reliable makes them a no for me.

Super helpful for doing layout work with thick metal, holes, etc. Was a 100% Sharpie user, but these are now getting a lot of use. Really helpful. Only downside is they can get mangled if you leave them in your pocket while working. Not quite as tough as a Sharpie, but seem to hold up well.