Check the listing for details. 1/4" 1/2" Drive Socket Extension Bar Set Flexible Extension-Bar Black 2pcs. Condition: New. Listed at 25.71 USD. Specification:Drive: 1/4" + 1/2";Total Length: 140mm / 5.51" + 250mm / 9.84";Package Includes: 1 Set Socket Extension Bar (One of Each Size).DescriptionOur flexible socket extension rod is made of spring steel with excellent resilience, ensuring that the strength and toughness can withstand the pressure of large torque changes, safe, reliable and durable.The surface is blackened, which has strong wear resistance and corrosion resistance, extending the service life of the extension rod.This flexible extension pole is designed with a spring brake ball system, Spring brake ball and non-slip steel ball at the end provide a firm grip and enhanced locking power, minimizing the risk of slipping and ensuring your work is completed smoothly and accurately.