- Long Head Deep Hole Marker Pens: Perfect for carpentry and construction professionals, these markers feature a unique 20mm long nose design, allowing you to easily mark deep holes and tight spaces that standard markers cannot access. - Durable High-Quality Material: Crafted from premium PP material, these markers resist aging, ensuring a long lifespan. The quick-drying, waterproof ink prevents smearing and smudging, keeping your marks clear even when items are handled. Outdoor use remains reliable as markings stay visible in rainy or humid conditions. - Ideal for Crafting and DIY: The long tip design of these deep hole markers makes them ideal for various projects, enabling precise markings in hard-to-reach areas. Whether you're working in tight gaps or deep recesses, this marker guarantees bold and clear results, elevating your project's quality. - Waterproof and Permanent: The combination of quick-drying and waterproof ink ensures that your markings are durable across different environments, significantly reducing the need for re-marking. This ink dries fast, whether you're tackling outdoor tasks in humid conditions or managing swift indoor jobs. Use Cases: 1. Construction Projects: Mark studs or beams deep within walls with precision, ensuring accurate placements for fixtures or wiring. 2. Carpentry Tasks: Easily mark measurements in tight spaces or deep grooves while crafting furniture or cabinetry for enhanced accuracy. 3. DIY Home Improvements: Perfect for marking locations in hard-to-reach areas, such as beneath sinks or behind appliances, facilitating efficient renovations.