• Versatile Long Head Design: This long nib marker penetrates 30mm deep holes, good for marking steel beams and tile joints. Deep hole marking pen is necessary for construction marking under extreme conditions.
• Quick Drying & Water-proof: As paint markers for metal，the oil-based ink dries in 8 seconds. These sharp marker pens are water-proof and ideal for outdoor workplaces and woodworking projects.
• Multi-Material Mastery: The deep hole marker pens write on glass and accuracy of 0.5mm. These construction markers replace 3+ specialized tools in plumbing and carpentry workflows.
• Durable Construction Markers:These sharp marking pens can resist the wear of steel surfaces. The paint markers for metal include shock-absorbing nib protection, ensuring 98% marking clarity retention.
• Ergonomic Efficiency: Weight-balanced long nib marker reduces hand fatigue during 8hr shifts. As versatile construction markers, they store 3x more ink than standard markers, with quick-refill twist mechanism for jobsite efficiency.

Shipping Note: Shipping to Alaska, Hawaii, PO Boxes, and APO addresses is not available for this item

Warranty: 90 Day Woot Limited Warranty