Proto J3100M Open End Wrench Set 11 Pc Metric

Product Description

The PROTO J3100M is an 11-piece metric open end wrench set designed for professional tradespeople who need reliable hand tools for mechanical, HVAC, plumbing, and industrial maintenance work. The set features a polished finish on forged wrench heads and stores in an included canvas roll for organized transport and jobsite access. Open end wrenches are a staple in any trade toolkit, used for turning fasteners in tight spaces where a box or socket wrench cannot seat properly. The J3100M covers a range of metric fastener sizes suited to modern equipment and machinery. At 1.75 pounds, the full set is lightweight and portable.

This wrench set is suited for residential and commercial service work across multiple trades. HVAC technicians, plumbers, pipefitters, and general maintenance mechanics will find it useful for equipment installation, service calls, and repair tasks involving metric hardware. The canvas roll storage keeps each wrench individually pocketed, making it practical for field technicians who carry tools to multiple job sites daily.

Key Features

• 11-piece set covers a range of metric open end wrench sizes
• Polished finish for corrosion resistance and clean appearance
• Canvas roll included for organized storage and transport
• Metric sizing system for use with modern metric-standard fasteners
• Compact and lightweight at 1.75 pounds for the full set

Compatibility

Designed as a general-purpose metric open end wrench set suitable for use on metric-fastened equipment across HVAC, plumbing, electrical, and light industrial applications.

Installation Notes

Open end wrenches are used by licensed tradespeople and general mechanics for tightening and loosening metric fasteners on equipment and piping systems. Always ensure the correct wrench size is fully seated on the fastener before applying torque to prevent rounding. When working on energized or pressurized systems, follow applicable lockout/tagout procedures and relevant codes such as NEC, IFGC, or IPC before beginning service.