SPECIAL MARKER FOR PROFESSIONAL CARPENTERS Long Head Deep Hole Marker Ideal for handiwork and DIY projects and its thoughtfully-designed marker make bold marks and canreach difficult spots. It features an elongated nib that canfit between narrow gaps or write inside small spaces, such as nail and screw holes in frames and lumber.A 30mm ruler along the side has lines every 5mm to help you with measurements. PRODUCT FEATURES: UNIQUE DESIGN MARKER: Specially designed markerswith a 20 mm long nib make it easy to mark inside deep holes and hard-to-reach places.With its strong and long metal nib, its the best tool to use in home inspections, renovations, and fixture installations. Convenient to use. QUICK DRY AND WATERPROOF: Long Head Deep Hole Marker isquick-drying, smudge-proof, and waterproof. It can mark most dry and dust-surfaceslike aluminum, metal, concrete, glass, wood, plastic. and its convenient to use. ALL-ROUND MARKER: Long Head Deep Hole Marker isSuitable for Furniture Decoration, Book Shelf, Lamp Drill Hole Position.Also marks Deep Holes for Metal Processing, Automobile Manufacturing, and other production Industries. STURDY AND COMFORTABLE: Adoptshigh-quality ABS material, which is durable, solid, and not easy to aging.The overall size is stable, reliable, and comfortable on the hand. PRODUCT DETAILS: Material:ABS, Metal Nib Color:Black, Blue, Red QTY:3PCS, 10PCS PACKAGE INCLUDES: