The OTR.001 Hard To Buff is a heavy-duty squeezer loaded with ultra-permanent ink, built for bold marks with that classic squeeze-marker flow. This one hits with deep black coverage and a smooth, juicy output. The 22 mm nib gives you extra-wide strokes, fat drips, and big letter movement when you want your lines to really dominate — perfect for filling larger areas and making a statement.

Inside you’ve got the legendary OTR.970 Hard To Buff ink — known for sticking, staining, and holding solid on pretty much anything: paper, canvas, metal, plastic, glass, stone, and more. Perfect for studio work, blackbooks, sticker pieces, and other surfaces where you want that permanent, high-impact look.

It’s refillable, the nib is replaceable, and the flow is fully squeezer-controlled — more pressure for big drips, softer squeeze for cleaner strokes.

If you’re into rich, glossy black with heavy coverage and that classic drip control, this marker does the job. Just remember to use it on legal surfaces and creative projects so you can paint stress-free and keep pushing your style.