Description:  Material: PP Length of Pen Tip: 20mm Total Length of Pen: 132mm Color: Black, Blue, Red, Green, White Suitable for metal, wood, glass, colloid, etc Feature: 1. Ultra-Slim Precision Tip Features a fine 18*1.2mm needle-like nib for pinpoint marking in cramped spaces, such as micro-drilling, electronics repair, or intricate wood joinery. 2. Compatibility Works seamlessly on wood, metal, plastic, ceramic, and composite materials, making it indispensable for carpentry, plumbing, and precision engineering tasks. 3. Long-Lasting Fade Resistance Equipped with quick-drying, oil-resistant ink that ensures crisp, smudge-proof lines even on greasy or wet, withstanding harsh workshop conditions. 4. User-Centric Design Built with anti-slip rubberized grips and a lightweight ABS body for fatigue-free use, plus a built-in 50mm scale for instant measurements mid-task. 5. Professional-Grade Efficiency Trusted by mechanics, craftsmen, and hobbyists to deliver razor-sharp markings in confined or awkward angles, streamlining complex assembly and fabrication work. Note: 1.Due to manual measurement, there may be a 1-3mm error in product dimensions. 2.The color of the product may have errors due to objective reasons, and the actual product is the main focus.  Package Includes: 5XLong Head Deep Hole Markers