Introduction
This instruction manual provides essential information for the proper use, maintenance, and care of your Capri Tools 3/8 inch Drive Stubby Impact Socket Set. Please read this manual thoroughly before using the product to ensure safe and effective operation.
Product Features
Stubby Length Design
The sockets in this set feature a stubby design, making them approximately 20% shorter than standard shallow length sockets. This compact size is specifically engineered for accessing fasteners in confined or hard-to-reach spaces.

Premium Material and Coating
These impact sockets are constructed from premium Chrome Molybdenum steel, which undergoes a proprietary heat treatment process. This material and treatment enhance durability and enable the sockets to withstand high torque applications from power tools. Each socket is expertly coated with manganese phosphate, a finish preferred in military and aerospace applications, providing superior protection against corrosion compared to standard black oxide coatings.


6-Point WaveDrive Design
The sockets incorporate a 6-point WaveDrive design. This design feature allows the sockets to grip fasteners more securely than traditional designs, which helps prevent fastener rounding and provides increased leverage during use.

Clear Sizing and Visibility
Each socket features large, laser-etched sizing for easy readability, even in low-light conditions. The stamped sizing is permanent, ensuring it will not fade or wear off over time, maintaining clear identification throughout the product's lifespan.

Package Contents
The Capri Tools Stubby Impact Socket Set (3/8" Drive/Metric Set) includes the following 15 pieces:
- Metric Stubby Impact Sockets: 8mm, 9mm, 10mm, 11mm, 12mm, 13mm, 14mm, 15mm, 16mm, 17mm, 18mm, 19mm, 20mm, 21mm, 22mm
The set also includes a spill-resistant Mechanic's Tray designed for convenient organization and storage of the sockets.

Setup and Installation
To use the stubby impact sockets, follow these steps:
- Select the Correct Socket: Identify the appropriate metric size socket (8mm to 22mm) that matches the fastener you intend to work with.
- Attach to Drive Tool: Securely attach the selected 3/8" drive socket to a compatible 3/8" drive impact wrench, ratchet, or breaker bar. Ensure the socket is fully seated on the drive anvil.
- Verify Fit: Before applying torque, ensure the socket fits snugly and completely over the fastener head. A loose fit can damage both the socket and the fastener.
Operating Instructions
When operating with your Capri Tools Stubby Impact Socket Set, observe the following guidelines:
- Safety First: Always wear appropriate personal protective equipment, including eye protection, when using impact tools and sockets.
- Correct Application: Use impact sockets exclusively with impact wrenches or other power tools designed for impact applications. Do not use standard chrome sockets with impact tools, as they are not designed to withstand the forces and may shatter.
- Apply Controlled Torque: Apply torque gradually and in a controlled manner. Avoid excessive force that could damage the fastener, socket, or tool.
- Maintain Stability: Ensure the workpiece is stable and secure before applying torque.
Maintenance
Proper maintenance will extend the life and performance of your socket set:
- Cleaning: After each use, wipe the sockets clean with a dry cloth to remove dirt, grease, and debris. For stubborn grime, a mild solvent can be used, followed by thorough drying.
- Storage: Store the sockets in their provided Mechanic's Tray or another suitable tool storage solution in a dry environment. This prevents rust and keeps the set organized.
- Inspection: Periodically inspect each socket for signs of wear, cracks, or damage. Discontinue use of any damaged socket immediately to prevent injury or further damage to fasteners.
Troubleshooting
If you encounter issues during use, consider the following:
- Socket Slipping: If a socket slips on a fastener, ensure you are using the correct size socket and that it is fully engaged on the fastener head. The fastener itself may be worn or damaged.
- Fastener Damage: If a fastener head becomes rounded or stripped, stop immediately. Using the wrong size socket or excessive force can cause this. Specialized fastener extraction tools may be required.
- Tool Compatibility: Ensure your impact tool's drive size (3/8") matches the socket's drive size.
Specifications
| Specification | Detail |
|---|---|
| Brand | Capri Tools |
| Model Number | CP53425 |
| Drive Size | 3/8 inch |
| Measurement System | Metric |
| Number of Pieces | 15 |
| Socket Sizes | 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22 mm |
| Material | Chrome Molybdenum Steel |
| Finish Type | Manganese Phosphate Coated, Corrosion Resistant |
| Item Weight | 1.1 pounds (approximate package weight) |
| UPC | 886352534253 |
Warranty and Support
This Capri Tools Stubby Impact Socket Set is backed by a Lifetime Warranty, ensuring quality and durability. For warranty claims, product support, or additional information, please refer to the official Capri Tools website or contact their customer service department.
You can also visit the official Capri Tools Store on Amazon for more products and information: Capri Tools Store