The Creations Unlimited Diamond Needle File set is a great addition to your workbench. Five diamond-coated files, each with a different cross-section profile, are ideal for delicate projects. Great for finishing hard materials. Washable and long lasting.WARNING: Drilling, sawing, sanding or machining wood products can expose you to wood dust, a substance known to the State of California to cause cancer. Avoid inhaling wood dust or use a dust mask or other safeguards for personal protection. For more information go to www.P65Warnings.ca.gov