Color-Coded System: Pens: 4 vibrant colors (black/blue/red/yellow) for easy task categorization (e.g., black for general marking, red for critical lines). Leads: Matching colored leads (6 per color) provide high-visibility marks on light/dark surfaces. Built-in Sharpeners: Each pen features an integrated blade for instant sharpening, ensuring precise tips without extra tools - ideal for on-the-go workflow. Deep Hole Marking: The extended, slim "extended nose" tip penetrates deep grooves, drilled holes, and tight corners, solving marking challenges in complex projects like furniture assembly or pipe installation. Retractable Design: Sturdy plastic bodies with ergonomic anti-slip grips withstand daily wear, while twist-to-retract mechanisms protect leads from breakage. 24-Lead Bulk Supply: Sufficient for large-scale projects or team use, reducing reordering frequency. Standard-sized leads fit most marking pencils. Colour:As Shown Material:Metal Package Contents: 4 * carpenter pencil 24 * refills 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.