Lang RB-3638M Ratcheting Box End Wrench 1-1/8 X 1-3/16 in

Product Description

The LANG RB-3638M is a double-end ratcheting box end wrench designed for professional use in HVAC, plumbing, electrical, and general mechanical applications. It features 12-point box ends sized at 1-1/8 inches and 1-3/16 inches, allowing engagement with standard hex fasteners from multiple angles. The ratcheting and reversing mechanism lets technicians drive or loosen fasteners without removing and repositioning the wrench on each stroke. Constructed from steel with a chrome-plated finish, this wrench is built to resist corrosion and handle the torque demands of trade work. It weighs 1.31 pounds and ships as a single piece.

This wrench is suited for residential and commercial service work where large fasteners are common, such as equipment mounting hardware, conduit fittings, pipe flanges, and structural connections. The dual-size ends reduce the number of tools a technician needs to carry when working across fastener sizes in close proximity. The ratcheting action is especially useful in confined spaces where full-swing wrench clearance is not available.

Key Features

• Ratcheting mechanism eliminates need to reposition wrench between strokes
• Reversing action supports both tightening and loosening without swapping tools
• 12-point box ends fit standard hex fasteners at multiple engagement angles
• Double-end design covers 1-1/8 inches and 1-3/16 inches in a single tool
• Chrome-plated steel finish resists corrosion in field conditions

Compatibility

Designed as a general-purpose double-end ratcheting box wrench compatible with standard hex fasteners in the 1-1/8 inch and 1-3/16 inch sizes across HVAC, plumbing, and mechanical trade applications.

Installation Notes

This wrench is intended for use by licensed or experienced trade professionals working on mechanical fasteners. Always de-energize electrical equipment and shut off fluid systems before applying torque to fittings or mounting hardware. Verify fastener size before applying force to avoid rounding hex heads. Follow applicable codes and manufacturer torque guidance for the equipment being serviced.