Front view of the IRWIN STRAIT-LINE LAYOUT PRO chalk reel featuring a high-impact blue ABS housing, integrated carry handle with ergonomic rubber grip, and a fold-away steel rewind handle.
Side perspective of the IRWIN 100-foot chalk reel showcasing the large sliding door for rapid chalk refills and the heavy-duty steel docking ring for secure anchoring during line snaps.
Profile view of the IRWIN IWHT48446 LAYOUT PRO highlighting the robust center hub and 2:1 high-speed gear ratio design for efficient line retraction on professional jobsites.
Top-down perspective of the IRWIN professional chalk reel illustrating the multi-functional design that allows the unit to be used as a plumb bob for accurate vertical layout.
Front view of the IRWIN STRAIT-LINE LAYOUT PRO chalk reel featuring a high-impact blue ABS housing, integrated carry handle with ergonomic rubber grip, and a fold-away steel rewind handle.
Side perspective of the IRWIN 100-foot chalk reel showcasing the large sliding door for rapid chalk refills and the heavy-duty steel docking ring for secure anchoring during line snaps.
Profile view of the IRWIN IWHT48446 LAYOUT PRO highlighting the robust center hub and 2:1 high-speed gear ratio design for efficient line retraction on professional jobsites.
Top-down perspective of the IRWIN professional chalk reel illustrating the multi-functional design that allows the unit to be used as a plumb bob for accurate vertical layout.
IRWIN

IRWIN STRAIT-LINE IWHT48446 100 ft Layout Pro Chalk Reel 10 oz Capacity 2 to 1 Gear Ratio Heavy Duty Braided Line Plumb Bob Feature

In stock
SKU: IWHT48446
$32.89 USD

Description

Maximize Jobsite Layout Efficiency with the IRWIN STRAIT-LINE IWHT48446

Use the IRWIN IWHT48446 Strait-Line Layout Pro Chalk Reel to eliminate layout downtime on commercial and residential jobsites. This high-capacity layout tool is engineered with a massive 10 oz chalk capacity and a 100 ft heavy-duty braided line designed to endure abrasive structural surfaces. Operating with a fast-retract 2:1 gear ratio, it speeds up line retrieval by 200% compared to standard reels, while the integrated center-line engineering allows the entire housing to function accurately as a structural plumb bob for vertical alignment checks.

Best Used For:

  • Subfloor and Deck Framing: Snapping long, crisp master lines across extensive plywood or concrete foundations.
  • Roofing and Truss Alignment: Marking straight reference points over high-abrasion shingles and long-distance rafters.
  • Commercial Parking Lots: Laying out precise dimensional grids on asphalt or concrete before permanent striping.

Key Performance & Safety Features

  • High-Speed 2:1 Gear Ratio: Rewinds the layout line two times faster than standard reels to increase jobsite productivity.
  • Heavy-Duty Braided Line: 100-foot professional-grade line designed to resist breaking and fraying over long distances.
  • Large Chalk Reservoir: 10-ounce capacity reduces the frequency of refills, keeping you focused on the layout.
  • Dual-Function Design: Features a center line that allows the unit to be used accurately as a plumb bob.
  • Industrial Durability: Robust steel handle and large center hub provide increased strength and high-torque capability.
  • Soft-Touch Ergonomic Grip: Rubber over-mold housing offers a comfortable, non-slip grip for all-day use.
  • Secure Anchoring: Steel docking ring and large sliding fill door ensure ease of use and secure line placement.

What's Included

  • (1) IRWIN IWHT48446 STRAIT-LINE LAYOUT PRO Chalk Reel (100 ft.)

Technical Specifications

Specification Field Measurement / Value
Brand IRWIN® STRAIT-LINE®
Model Number IWHT48446
Line Length 100 ft.
Chalk Capacity 10 oz.
Gear Ratio 2:1 Fast-Retract
Housing Material Heavy-Duty ABS with Rubber Over-mold
Handle Material Robust Steel
Line Type Heavy-Duty Braided
Product Color Blue / Black
Assembled Weight Approx. 0.8 lbs (Empty)
Warranty Limited Lifetime Warranty


Pro-Tip: To achieve a perfectly crisp line on high-tension snaps without ghosting or excessive overspray, always pull the line tight, pull vertically straight up exactly two to three inches from the surface, and release cleanly. Regularly clear moisture from the entry seal to prevent your 10 oz chalk reservoir from clumping.