Premium Material: Made with a durable plastic body and nib, fade-resistant, waterproof, quick-drying, eco-friendly, and odorless, perfect for marking deep holes or other tight spaces. Easy to carry and store.
Easy to Use: Construction pen with a 20mm nib to reach and mark through holes or other confined spaces. It dries quickly after writing, so you don't have to worry about making a mess after marking.
Practical Design: Three colors of deep hole markers are available: red, blue, and black. Different colors can be used to mark with different meanings to meet your various marking needs.
Wide Application: Can be used on wood, metal, plastic, walls, paper, and more. Suitable for the woodworking industry, decoration industry, household use, material processing, automobile manufacturing, and other industries. Package Contents: You will receive 9 deep hole markers, nib length 20mm/0.78 inches, in 3 colors: black, red, and blue, 3 pieces of each color.