Astro Tools 78354: 10-Piece 3/8in Drive Pinless Universal Torque-Saver Extension Socket Set – Metric

Overview

The Astro Tools 78354 kit delivers a complete, pinless solution for metric fasteners, designed for high-torque impact work. With a 9-inch reach and a 3/8 inch drive, this set covers every size from 10 mm to 19 mm in one no-skips collection, all stored in a compact, sturdy case.

Torque-Saver Design and Pinless Precision

• Heavy-Duty TORQUE-SAVER design reduces torque loss through a beefed-up joint and extension shaft.
• Pinless universal socket ends maintain true alignment, even after repeated heavy use.
• Pushes torque down the length of the tool for improved engagement at maximum angles and when used straight.
• 360° of freedom lets you maneuver around obstacles without pulling the socket from the fastener.

Size Coverage, Compatibility, and Durability

Every size from 10 mm through 19 mm is included, ensuring you do not need to juggle multiple sets. The Cro-Mo forged construction offers durability and a 100% pinless design for reliable operation with impact wrenches and extensions.

• 10–19 mm metric range, no skipped sizes for convenient workflow.
• 3/8 inch drive, 6-point pinless sockets designed for a secure grip.

Real-World Scenarios

Whether you are wrenching on a vehicle, assembling machinery, or performing bike maintenance, the Torque-Saver extension helps reach stubborn fasteners in tight spaces. The anti-floppy design helps you stay on target, saving time and reducing dropped bolts during busy days.

What You Get and How to Use It

• 10 assorted sizes (10 mm to 19 mm) in a compact case
• 9-inch-long extensions that pair with any 3/8in impact wrench

Tip: Align the socket before you twist to maintain contact and reduce drop-offs. After use, clean and store in the original case to preserve joint integrity.