Description
US PRO Tools 7-Piece 3/8″ Drive Impact Hex Bit Socket Set (Model 3989)
Product Overview
The US PRO Tools (Model 3989) is a 7-piece impact hex bit socket set engineered for high-torque mechanical and automotive applications. Manufactured from premium chrome-molybdenum steel with a hardness rating of HRC50-52, these sockets are built to endure the intense percussive shock of pneumatic and cordless impact wrenches without twisting or snapping.
Key Features & Specifications
-
7-Piece Metric Assortment: Includes the most frequently used hex sizes: H4, H5, H6, H7, H8, H10, and H12 to cover a broad range of workshop fasteners.
-
3/8″ Square Drive: Designed with a standard 3/8″ drive compatibility for balanced reach and torque application in restricted areas.
-
Optimized Length: Each bit measures 60mm in overall length, providing the ideal balance between deep-access capability and structural rigidity.
-
Chrome-Molybdenum Construction: Forged from high-grade Cr-Mo steel for exceptional durability and impact resistance under heavy professional use.
-
Phosphate Corrosion Finish: Coated with a protective black phosphate finish to guard against rust, oil, and workshop wear.
Core Workshop & Automotive Applications
-
Brake & Suspension Servicing: Removing and tightening caliper mounting bolts, suspension components, and drive axle fixings that require hex keys.
-
Engine & Machinery Maintenance: Handling internal hex fasteners on motorcycle engines, machinery assemblies, and auxiliary housings.
What’s in the Box
-
7x 3/8″ Drive Impact Hex Bit Sockets (H4, H5, H6, H7, H8, H10, H12)
-
Storage Rail / Case
