6-Piece Socket Adapters: These socket adapter extension bars have a 1/4-inch hex shank and are compatible with 1/4, 3/8, and 1/2-inch drive sockets. They fit any corded or cordless impact driver or power drill. The set includes 2.6, 2.9, and 6 length adapters for better access in tight spaces High Strength Steel Construction: Constructed from premium heat-treated chrome vanadium steel, these impact socket adapters are designed to withstand high torque. Finished with heavy-duty black manganese phosphate for enhanced strength and corrosion resistance, ensuring long-lasting performance Secure Socket Fit: WORKPRO hex-to-square socket adapters feature chamfered edges and spring-loaded detent balls. These ensure secure socket retention without slipping during use, providing reliable and consistent performance in various applications Convenient Design: Includes handy holders to keep your tools organized. Each holder is labeled with size markings for quick and easy identification, en