Proto J1100S-M Box End Wrench Set 11 Pc Metric

Product Description

The PROTO J1100S-M is an 11-piece metric box end wrench set designed for professional trades work where open-end wrenches are not an option. Each wrench features a 12-point box end with a 15-degree head offset angle, giving technicians the clearance needed to work in tight spaces without repositioning every stroke. The polished finish resists corrosion and makes cleanup straightforward after heavy use. This set is a solid daily-use tool for HVAC technicians, plumbers, electricians, and industrial maintenance professionals who need reliable metric fastener coverage across a full range of sizes.

The J1100S-M is suited for residential and commercial service environments where metric fasteners are standard. The 12-point configuration engages fasteners with less rotation per swing, which matters when working in confined equipment bays, mechanical rooms, or overhead installations. The set is packaged in a tool roll for organized storage and portability on service vehicles or job sites. Technicians who work on imported equipment, boilers, chillers, or any metric-fastened mechanical systems will find this set covers the most commonly encountered wrench sizes.

Key Features

• 11-piece set provides broad metric fastener coverage in a single kit
• 12-point box ends allow engagement with less arc swing in confined spaces
• 15-degree head offset angle improves clearance over fastener heads and surrounding components
• Polished finish resists corrosion and simplifies cleaning after field use
• Tool roll container keeps wrenches organized and protects finished surfaces during transport
• Lifetime warranty reflects the manufacturer's confidence in long-term durability

Compatibility

Designed as a general-purpose metric box end wrench set suitable for use on metric-fastened mechanical, HVAC, plumbing, and electrical equipment across residential and commercial applications.

Installation Notes

Box end wrenches should be selected so the wrench fully seats on the fastener before applying torque. Inspect each wrench for cracks or deformation before use, and do not use extension bars or cheater pipes on standard hand wrenches. When working on energized or pressurized systems, follow applicable lockout and shutout procedures before breaking fasteners loose.