6-Piece Socket Adapters: These socket adapter extension bars feature a 1/4-inch hex shank and are compatible with 1/4, 3/8, and 1/2-inch drive sockets, fitting with any corded or cordless impact driver or power drill. The set includes 2.6, 2.9 and 6 length socket adapter extensions, extending the reach of your impact tools for easier access in tight work spaces. High Strength Steel Construction: These impact socket adapters are constructed from premium heat-treated chrome vanadium steel to withstand high torque, and finished with durable black manganese phosphate for superior strength and corrosion resistance. Secure Socket Fit: WORKPRO hex to square socket adapters feature chamfered edges and spring-loaded detent balls for secure socket retention without slipping during use. Convenient Design: Handy holders are included to help keep your tools organized, with size markings for fast and easy identification. Wide Application: This reliable set of adapte