Proto J72135M Deep Impact Socket Set 3/8 Drive Metric

Product Description

The PROTO J72135M is a 10-piece metric deep impact socket set built for professional trade use in demanding installation and service environments. Sized from 10 mm to 19 mm, the set covers the most common fastener sizes encountered in HVAC equipment, plumbing rough-in, and mechanical system work. Each socket features a 6-point design that grips fastener flats squarely, reducing rounding under high-torque impact loads. The 3/8 inch drive size is compatible with standard impact wrenches and ratchets in that drive class. Sockets are constructed from steel and ship on a clip rail for organized storage and quick access on the job.

This set is suited for residential and light commercial mechanical service where metric fasteners are standard, including equipment mounting, panel removal, and component replacement on HVAC units, pumps, and similar mechanical assemblies. The deep socket profile accommodates fasteners with extended bolt threads that standard-depth sockets cannot reach. The 10 mm through 19 mm range handles the most frequently encountered metric hex fastener sizes in trade work.

Key Features

• 10-piece set covers 10 mm, 11 mm, 12 mm, 13 mm, 14 mm, 15 mm, 16 mm, 17 mm, 18 mm, and 19 mm
• 3/8 inch drive compatible with standard impact wrenches and ratchets
• 6-point socket geometry reduces fastener rounding under impact torque
• Deep profile reaches fasteners on extended or recessed bolt threads
• Steel construction rated for impact use
• Clip rail storage keeps the set organized and portable on the job

Compatibility

Designed for use with 3/8 inch drive impact wrenches, air ratchets, and hand ratchets in metric fastener applications across HVAC, plumbing, and general mechanical service work.

Installation Notes

Install and remove with a 3/8 inch drive impact wrench or ratchet rated for the application torque. Confirm the socket is fully seated on the fastener before applying power to the impact tool. Do not use impact sockets on hand-only torque tools beyond their rated capacity. Inspect sockets for cracks or deformation before each use and remove any damaged socket from service.