I like their marking pencils VERY MUCH. They are easy to use and the marks stay on long enough for me. I actally have been buying these with JoAnn's 50% off coupons so now I have two of the pencils - one with white and one with the grey leads so I don't need to change leads (also an extra supply of leads for each). I've tried many marking tools over 25 + years of quilting and think these are the best so far for marking quilting patterns.