Astro Tools 14-Piece 3/8 in Low Profile Nano Impact Sockets - Compact

In this review the Astro Tools 78314 14-piece 3/8 in drive Low Profile Nano impact socket set is judged on one key promise: give mechanics reliable metric sockets that fit where standard impacts cannot. The bottom line is that this set is for technicians and DIYers who need quality CR-MO sockets that are unusually short for tight clearances. The reviewer found the 0.88 in length and forged construction deliver durable, compact sockets that pair well with flex ratchets and stubby impact drivers, making them a practical choice when access is limited.

Key Features

• Ultra short length: At 0.88 in long, these sockets are 35% shorter than standard shallow impact sockets, allowing access in very tight spaces where conventional sockets will not reach.
• Metric range in 14 pieces: The set includes common metric sizes in a compact arrangement, useful for most automotive and maintenance tasks.
• 17 mm outside hex: Each socket has an outside hex so a wrench can be used for extra torque when clearance permits, increasing versatility.
• Forged CR-MO construction: Broached forged chromium-molybdenum material provides thicker walls and robust durability compared with thinner alternatives.
• Low profile compatibility: The stubby nano profile pairs well with flex end ratcheting wrenches and compact impact drivers for confined jobs.

Who It's For

This set is aimed at professional mechanics, mobile technicians, and serious DIYers who routinely work in tight engine bays, under dash areas, or on equipment where a short socket is essential. The compact 0.88 in length and outside hex make it ideal for jobs that require both impact use and occasional wrenching in limited clearance.

Those who primarily need deep reach, very large sizes, or a complete drive assortment with extensions and adapters should look elsewhere; this set is focused on short, robust metric sockets rather than full-length coverage for every application.

Pros & Cons

Pros

• Exceptional compactness for tight spaces thanks to the 0.88 in nano profile.
• Solid forged CR-MO construction gives a durable feel and greater material thickness between drive and body.
• 17 mm outside hex adds compatibility with a wrench for added versatility.
• Works well with flex end ratcheting wrenches and stubby impact tools in cramped locations.

Cons

• Low profile design limits reach; not suitable when socket depth is required.
• Set is focused on short metric sockets only, so users needing non-metric or deep options will need additional tools.

Specifications

Drive size	3/8 in
Set pieces	14-piece metric
Socket length	0.88 in (22.5 mm)
Material	Broached forged CR-MO (chromium-molybdenum)
Outside hex	17 mm
Profile	Low profile nano impact sockets

Our Verdict

The Astro Tools 78314 nano impact set is a smart, value-focused choice for anyone who needs reliable, forged metric sockets that fit into tight areas. Its short 0.88 in length, thicker CR-MO construction, and outside hex feature make it durable and versatile for shop or field use. Buy this set if compactness and strength are your priorities; skip it if you need reach or a wider assortment of drive types.

Frequently Asked Questions

Are these sockets safe for impact use?
Yes, they are forged CR-MO nano impact sockets designed for impact tools and offer thicker walls than many alternatives.

Will they work with a ratcheting wrench?
Customers report they pair well with flex end ratcheting wrenches and can also accept a box or open wrench on the 17 mm outside hex.

How much shorter are these compared to regular shallow impacts?
They measure 0.88 in and are about 35% shorter than standard shallow impact sockets and 15% shorter than other stubby impact sockets.