Proto J52210H Hex Bit Socket Set 10pc 3/8 1/2 in Drive

Product Description

The PROTO J52210H is a 10-piece metric hex bit tip socket set designed for professional trade use in mechanical, electrical, and general maintenance applications. The set covers hex bit sizes from 4 mm to 17 mm and fits both 3/8 inch and 1/2 inch drive ratchets and breaker bars. Each socket carries a chrome finish for corrosion resistance and easy identification of wear. The set ships in a blow-molded case that keeps sockets organized and protects them from shop damage. Technicians working on HVAC equipment, electrical panels, plumbing fixtures, and mechanical assemblies will find this set covers the most common metric hex fastener range encountered in the field.

This set is suited for residential and commercial service work where metric hex-head fasteners are standard. The dual-drive compatibility — 3/8 inch and 1/2 inch — makes it practical across a range of torque requirements, from lighter electrical and control panel work to heavier mechanical fasteners on equipment frames and flanges. The blow-molded case makes it a clean addition to a tool bag or service van tray. Licensed tradespeople across HVAC, plumbing, and electrical disciplines will find this set covers everyday hex fastener service without carrying multiple separate sockets.

Key Features

• 10-piece metric hex bit tip set covering 4 mm to 17 mm
• Compatible with both 3/8 inch and 1/2 inch drive tools
• Chrome finish resists corrosion and simplifies visual inspection
• Blow-molded case keeps set organized and protected during transport
• Metric measurement type suited for equipment with metric fastener standards

Compatibility

Designed for use with standard 3/8 inch and 1/2 inch drive ratchets, breaker bars, and extension bars commonly used in HVAC, plumbing, electrical, and general mechanical service work.

Installation Notes

Select the correct drive size ratchet or breaker bar before applying torque to avoid socket or fastener damage. Ensure the socket is fully seated on the drive tool and fully engaged on the fastener before turning. Inspect sockets for cracks or rounding before each use and remove any damaged piece from service. Always de-energize or lock out equipment before accessing fasteners on electrical enclosures or mechanical assemblies.