Description
Product Overview
The Irwin STRAIT‑LINE Chalk Line (model IWHT48441RC) delivers reliable, high‑visibility lines up to 100 ft long. Constructed with an impact‑resistant aluminum housing and a slim‑profile steel handle, it balances strength and comfort. The 5‑6 strikes per pull are made possible by an abrasion‑resistant poly line that retains chalk longer, while the innovative spool design reduces line damage and aerates the chalk for consistent coverage.
Usage
Designed for framing, flooring, drywall, and landscaping, this chalk line excels in both professional construction sites and home improvement projects. The intuitive hook dock prevents snags, and the wide refill door allows quick chalk changes, making it perfect for repetitive layout tasks where speed and accuracy matter.
Why Choose Us
Irwin’s reputation for durability backs this tool with a limited warranty and a #1 ranking in Measuring & Layout Chalk Lines. The combination of aluminum housing, robust steel handle, and a 1:1 gear ratio ensures smooth line retraction and long‑term performance, setting it apart from generic plastic models.
Key Features
- Five to six strikes per pull with abrasion‑resistant 100 ft poly line
- Aluminum housing provides impact resistance and longevity
- Improved hook storage reduces snags and saves time
- Wide refill door for quick, visible chalk replacement
- Ergonomic steel handle and slim profile for low‑strain use
FAQ
How many strikes can I get from a single pull?
The 100 ft poly line is designed to deliver five to six clean strikes per pull, ensuring efficient layout work.
Is the chalk line suitable for outdoor use?
Yes, the durable aluminum housing and weather‑resistant poly line make it reliable for both indoor and outdoor applications.
Can I use this chalk line for plumb work?
Absolutely. The center line can double as a plumb bob, allowing you to establish vertical references without extra tools.
How do I refill the chalk?
Open the wide side door, pour in the chalk powder, and close the door. The design provides clear visibility to avoid overfilling.
What warranty does Irwin offer?
This product comes with Irwin’s limited warranty, covering manufacturing defects for the duration specified by the manufacturer.




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