IRWIN STRAIT-LINE 66406 Yellow Marking Crayon – 4-1/2"
Bright, easy-to-see marks that hold up no matter what the surface throws at you. Built for real jobsite conditions where chalk and pencils fall short.
The IRWIN STRAIT-LINE yellow marking crayon is made for marking on tough surfaces—wet, oily, slick, or rough. It delivers consistent, visible lines across a range of materials, making it a dependable choice for layout and marking work.
Why Contractors Choose It
🟡 Writes on oily, wet, slick, or dry surfaces without skipping
🟡 Bright yellow color stands out for clear visibility
🟡 Waterproof formula holds up in outdoor and damp conditions
🟡 Non-toxic for safer everyday use on the jobsite
🟡 Works on lumber, concrete, ceramics, and metal
How To Use
1️⃣ Apply directly to the surface with firm, even pressure.
2️⃣ Mark layout lines, cuts, or reference points.
3️⃣ Reapply as needed for stronger visibility on rough materials.
Additional Notes
• Length: 4-1/2"
• Ideal for framing, roofing, siding, and general construction work
• Performs reliably in cold and wet conditions
⚠️ California Proposition 65 Warning
⚠️ This product may expose you to chemicals commonly found in industrial materials, which are known to the State of California to cause cancer or reproductive harm.
IRWIN STRAIT-LINE 66406 Yellow Marking Crayon – 4-1/2"
Bright, easy-to-see marks that hold up no matter what the surface throws at you. Built for real jobsite conditions where chalk and pencils fall short.
The IRWIN STRAIT-LINE yellow marking crayon is made for marking on tough surfaces—wet, oily, slick, or rough. It delivers consistent, visible lines across a range of materials, making it a dependable choice for layout and marking work.
Why Contractors Choose It
🟡 Writes on oily, wet, slick, or dry surfaces without skipping
🟡 Bright yellow color stands out for clear visibility
🟡 Waterproof formula holds up in outdoor and damp conditions
🟡 Non-toxic for safer everyday use on the jobsite
🟡 Works on lumber, concrete, ceramics, and metal
How To Use
1️⃣ Apply directly to the surface with firm, even pressure.
2️⃣ Mark layout lines, cuts, or reference points.
3️⃣ Reapply as needed for stronger visibility on rough materials.
Additional Notes
• Length: 4-1/2"
• Ideal for framing, roofing, siding, and general construction work
• Performs reliably in cold and wet conditions
⚠️ California Proposition 65 Warning
⚠️ This product may expose you to chemicals commonly found in industrial materials, which are known to the State of California to cause cancer or reproductive harm.
