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1-1/16" X 1-1/4" Flat Ratch Bx Wr-15" - Kastar

Part #: KHRB-3440

The Kastar KHRB-3440 is a professional-grade 1-1/16" x 1-1/4" flat double-end ratcheting box wrench engineered for demanding automotive and industrial applications. With an overall length of 15 inches, this SAE wrench provides extended reach and leverage, making it ideal for efficiently tackling large fasteners. Its robust construction adheres to ASME B107.100-2010 standards, ensuring reliable performance and durability in professional shop environments.

Key Features

  • Double-End Ratcheting Design: Features precise 1-1/16" and 1-1/4" SAE 12-point box ends, offering versatility for common large fastener sizes encountered in heavy-duty work.
  • Optimized Fastener Engagement: Accurately broached openings provide a secure, non-slip fit, minimizing the risk of rounding fasteners and ensuring maximum torque transfer.
  • Efficient Reversible Action: Designed for quick and straightforward direction changes by simply flipping the wrench over, allowing for continuous work in confined or awkward spaces.
  • Enhanced Durability: Manufactured from heat-treated steel and finished with a corrosion-resistant chrome plating, extending the tool's lifespan and maintaining its professional appearance.
  • Extended Leverage and Reach: The substantial 15-inch overall length delivers significant mechanical advantage and improved access to deeply recessed or hard-to-reach bolts.
  • Professional Standard Compliance: Built to meet ASME B107.100-2010, guaranteeing a professional level of quality and performance suitable for demanding technical work.

Applications

This Kastar flat ratcheting box wrench is an indispensable tool for professional mechanics, heavy equipment operators, and industrial technicians working with larger fasteners. It is well-suited for a variety of tasks, including:

  • Heavy-duty automotive maintenance and repair, such as truck suspension systems, chassis components, and axle work.
  • Servicing agricultural machinery and farm implements.
  • Assembly and maintenance of industrial equipment and machinery.
  • Marine engine and shipbuilding applications.
  • General construction equipment upkeep and structural fastening.

Specifications

  • Manufacturer: Kastar
  • Model Number: KHRB-3440
  • Type: Double End, Flat, Ratcheting Box Wrench
  • Nominal Sizes: 1-1/16" x 1-1/4" SAE
  • Number of Points: 12
  • Overall Length: 15 inches
  • Head Thickness: 9/16 inch
  • Process: Heat Treated
  • Finish: Chrome Plated
  • Applicable Standard: ASME B107.100-2010
Only 1 left in stock - order soon

$38.81

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  • Model: 443218
  • Shipping Weight: 1.27lbs
  • UPC: 777691960462
  • Manufacturers Part #: KHRB-3440
  • Manufactured by: Kastar
  • Also Known As: KHRB-3440

This product was added to our catalog on Saturday 30 May, 2026.

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