4pcs Long Nib Deep Hole Marker Pen – 45mm Extra-Length Tip for Precise Markin
Long Nib Deep Hole Marker Pen – 45mm Extended Tip Refillable Marker for Woodworking & Plumbing. 【45mm Extended Nib for Deep Marking】 45mm/1.77″ slender nib with 2mm tip specifically designed for marking in drill holes, pipe interiors, and narrow wood joints where standard markers cannot reach.