3/8 Inch Drive Impact Extension Set, 4-Piece, Built Tough With Cr-Mo Steel, Radius Corner Design Reduces Wear And Boosts Torque, Steel Ball Retainer On Male End, Dual Size Markings For Quick Fastener Fit

4-Piece 3/8 in Drive Impact Extension Set with CR-MO Steel
✔️ SAE sizes 3, 5, 10, 15 in; radius corner design; ANSI tested

This four-piece SAE set is built for high-torque automotive tasks. Made from CR-MO steel, it resists wear while delivering consistent torque in tight spaces. Dual size markings and a steel ball retainer on the male end enhance usability, and a sturdy storage tray keeps everything organized.

✅ 4-piece SAE set with lengths 3", 5", 10", 15" for common automotive work
✅ CR-MO alloy steel delivers long life under impact
✅ Radius corner design reduces wear and increases torque on fasteners
✅ Steel ball retainer on male end ensures secure engagement
✅ Dual markings laser etched and roll stamped for permanent identification
✅ Heavy molded storage tray for easy transport

💡 What is a 3/8 inch drive impact extension set used for in automotive repair?
- Handy for reaching fasteners in cramped engine bays and undercarriages
- Improves torque transfer with a radius corner design and CR-MO steel
- Dual size markings help you quickly pick the right length
- Storage tray keeps extensions organized for shop efficiency