IRWIN STRAIT-LINE 66401 4-1/2" RED MARKING CRAYON NON-TOXIC WATERPROOF
- IRWIN INDUSTRIAL TOOL CO
- 66401 RED LUMBER CRAYON
- Use on oily, slick, wet, cold, or dry surfaces
- For lumber, concrete, ceramics & metal
- Non-toxic & waterproof
- Color: Red
Make bold, easy-to-see marks on the jobsite—even in tough conditions. This red marking crayon writes clearly on wet, oily, slick, or dry surfaces so you can mark materials quickly and keep work moving.
The IRWIN Strait-Line 66401 red marking crayon is a dependable jobsite essential used by roofers, framers, and contractors for quick layout marks and material identification. Its durable formula writes smoothly on a wide range of surfaces including lumber, concrete, ceramics, and metal, delivering visible marks that hold up in real work conditions.
Why Contractors Choose It
- 🧰 Marks in tough conditions – Writes on wet, oily, slick, cold, or dry surfaces
- 🎯 High-visibility red color – Easy-to-see layout and measurement marks
- ⚡ Waterproof formula – Marks stay visible even in damp environments
- 🧱 Works on multiple materials – Suitable for lumber, concrete, ceramics, and metal
- ✔️ Non-toxic construction – Safe for regular jobsite use
How To Use
- Use the crayon to mark measurements, cut lines, or layout points directly on the material.
- Apply firm pressure to create clear, visible marks.
- Use on wood, concrete, metal, or other surfaces as needed during layout or installation.
- Store in your tool pouch or toolbox for quick access on the jobsite.
Product Details
- Brand: IRWIN Strait-Line
- Model: 66401
- Length: 4-1/2"
- Color: Red
- Type: Lumber / marking crayon
- Non-toxic and waterproof
