3/8 in. Drive Metric Deep Impact Socket Set (15-Piece) - Durable

In this review the Capri Tools 3/8 in. Drive Metric Deep Impact Socket Set stands out as a practical, no-nonsense collection for anyone who uses impact tools regularly. The set's single biggest selling point is its combination of premium Chrome Molybdenum construction and a manganese phosphate finish that together deliver real durability and corrosion resistance under high torque. For mechanics, DIYers, and shop technicians who need deep access and a reliable grip on metric fasteners, this set covers the most common sizes without unnecessary extras.

Key Features

• Chrome Molybdenum steel: Tempered with a proprietary heat treatment to withstand higher torque from impact wrenches and reduce the risk of cracking under load.
• Manganese phosphate coating: Provides superior corrosion resistance and a tougher finish than typical black oxide, extending service life in harsh environments.
• 6-point Wave Drive design: Grips fasteners more tightly than conventional sockets to help prevent rounding and improve torque transfer.
• Deep socket reach: The deep set design allows access to long bolts and recessed fasteners commonly found in automotive and equipment work.
• Comprehensive metric range: Includes 15 sizes from 8 mm through 22 mm so there are no common size gaps for most repair and maintenance tasks.

Who It's For

This set is ideal for automotive technicians, home mechanics, and shop users who rely on 3/8 in. drive impact tools and need a robust metric selection for regular repair work. The deep sockets are particularly useful for reaching over studs, through spacers, or when working on engine and suspension components.

Users who rarely use impact tools or who need a mixed SAE/metric collection might prefer a different kit. Also, professionals requiring specialty or oversized sockets beyond 22 mm will need to supplement this set.

Pros & Cons

Pros

• Durable Chrome Molybdenum construction stands up to heavy use with power tools.
• Protective manganese phosphate finish resists corrosion better than common black oxide coatings.
• 6-point Wave Drive reduces fastener rounding and improves grip under load.
• The 15-piece range covers the most frequently used metric sizes with no skipped increments.

Cons

• Set is metric only, so users who also need SAE sizes must buy additional sockets.
• The kit does not include a dedicated storage tray or organizer in some packages, so a separate organizer may be helpful.

Specifications

Drive size	3/8 in.
Socket type	Deep impact sockets
Material	Chrome Molybdenum steel
Finish	Manganese phosphate coating
Design	6-point Wave Drive
Sizes included	8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22 mm
Pieces	15

Our Verdict

The Capri Tools 3/8 in. Drive Metric Deep Impact Socket Set is a solid value for mechanics and serious DIYers who need tough, reliable sockets for impact use. Its hardened Chrome Molybdenum construction, aerospace-grade manganese phosphate finish, and practical metric range make it a dependable set for everyday shop work; those needing SAE sizes or specialty sockets should plan to add to the kit.

Frequently Asked Questions

Are these sockets safe for impact use?
Yes. They are made from Chrome Molybdenum steel and tempered for impact tool torque, and feature a manganese phosphate finish for added durability.

Do the sockets include a storage organizer?
Some packages may not include a dedicated tray; buyers should check the product package details or plan to use a separate organizer.

What size range is covered?
The set includes 15 deep metric sizes from 8 mm through 22 mm, covering the most commonly used metric fasteners.