15 pieces deep hole marker features: 20 mm deep hole marker with marking depth, can mark deep holes or other tight areas that other woodworking pins cannot achieve. Quickly drying and waterproof, 't worry that you will get dirty after marking, and even after washing it does not fall off after washing.The body of the borehole marker is supplied with a simple 3 cm line that is practical for the design measurement. The deep hole marker is equipped with a pin clip, which can be attached to a bag or in a book for easy wearing.Deep hole markers contain permanent ink, water and wiped, durable borehole marker on metal, plastic, stone, glass, wood, ceramic, paper surfaces and more 15 extra-long lace deep hole marker pencil, enough quantity to get their different marker requirementsTo meet three different colors (5 red + 5 blue + 5 black) can distinguish signs with different meanings.Together for various specialist areas.Furniture production, automotive industry, woodworking industry, decorative industry, metal processing industry, household use etc. Specification: connection wire diameter: 0.7-1 mm Maximum writing length: . 200m length: 140mm packageIncludes: 5 x blue permanent marking pencils 5 x red permanent marking pencils 5 x black permanent marking pencils Colour:red+blue+black Material:plastic Package Contents: 15 x Reach Markers Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.