Lang RB-3440 Ratcheting Box End Wrench 1-1/16 X 1-1/4 in

Product Description

The LANG RB-3440 is a double-end ratcheting box end wrench designed for professional trade use in tight-clearance fastener work. Built from chrome-plated steel, it features two box ends sized at 1-1/16 inches and 1-1/4 inches, each ground to a 12-point configuration. The reversing ratchet mechanism allows the technician to drive or back off fasteners without repositioning the wrench on the nut or bolt head. At 1.31 pounds, it carries enough mass for solid torque transfer while remaining manageable in confined spaces. HVAC technicians, plumbers, and pipefitters regularly reach for box end wrenches of this size when working on flange bolts, equipment mounts, and service connections.

This wrench is suited for service and installation work across residential and commercial applications. The 1-1/16-inch end commonly fits larger pipe fittings, equipment mounting hardware, and structural fasteners encountered in mechanical rooms and rooftop equipment. The 1-1/4-inch end handles oversized hex fasteners found on commercial HVAC equipment, large valve bonnets, and heavy-duty mechanical assemblies. The ratcheting action is particularly useful when swing arc is limited, reducing the need to break and reset the wrench between strokes.

Key Features

• Ratcheting mechanism with reversing action for driving and backing fasteners in restricted-swing applications
• Double-end design provides two sizes in one tool: 1-1/16 inches and 1-1/4 inches
• 12-point box ends for positive engagement on standard hex fasteners
• Chrome-plated steel construction for corrosion resistance and durability
• 1.31-pound weight balances torque capacity with hand fatigue reduction

Compatibility

Designed for use with standard 1-1/16-inch and 1-1/4-inch hex fasteners commonly found on HVAC equipment, plumbing assemblies, and mechanical system hardware.

Installation Notes

This wrench is used by HVAC technicians, plumbers, pipefitters, and general mechanical tradespeople. Before beginning fastener work on pressurized systems, shut off and depressurize the system in accordance with applicable codes. Verify the wrench head seats fully on the fastener before applying torque. Inspect the ratchet mechanism periodically for wear or debris that could cause slippage under load.