TEKTON SIA11103 3/8 Inch Drive x 3 Inch Impact Extension is engineered to extend the reach of your impact driver and sockets to hard-to-reach fasteners in engine bays, frames, and assemblies. It is the best-fit buy for DIYers and professional technicians who need impact-rated durability at a budget price. Buy online today for just $9.00 and apply coupon code SAVE15 at checkout for extra savings, with free shipping on combined orders over $45.00.
Specifications
- Brand: TEKTON
- Model: SIA11103
- Product Type: Impact extension bar
- Drive Size: 3/8 inch
- Length: 3 inches
- Material: 6140 Cr-V steel
- Finish: Manganese phosphate, protective coating
- Retention: Spring-loaded detent ball and detent pin hole
Materials and Build
High-performing 6140 chromium-vanadium steel stands up to repeated impact torque, while the manganese phosphate finish protects against corrosion and wear in demanding shop environments.
Functions and Compatibility
- Engineered specifically for use with impact drivers
- Adds 3 inches of reach for recessed and obstructed fasteners
- Spring-loaded detent ball securely latches sockets, preventing drops
- Detent pin hole works with both friction ring and detent pin anvils
Use Cases
- Automotive repair — reaching bolts behind engine components
- Frame, suspension, and equipment fastening with impact wrenches
- Any task requiring a secure, impact-rated 3-inch extension on a 3/8 inch drive
Selection Criteria and Comparison
When choosing an impact extension, check drive size (3/8 inch here), reach (3 inches), impact rating (yes — impact-driver engineered), and socket retention (detent ball plus pin hole). Versus standard chrome extensions, the SIA11103's Cr-V steel and phosphate finish survive impact torque that cracks lesser extensions. Alternatives in longer lengths (6 in., 10 in.) complement this one — buy multiple for a complete reach kit.
Price Value and Deal Value
At $9.00, this impact-rated extension is an affordable addition to any 3/8 inch drive kit. Coupon code SAVE15 takes 15% more off at checkout, and combining purchases over $45.00 earns free shipping. Small price, professional capability.
