Draper-Expert-3-4-Square-Drive-Extension-Bars-Draper-Expert-10170-p-B-I-Expert-Quality-I-B-manufactured-from-chrome-vanadium-steel-hardened-tempered-chrome-plated-&-polished-for-corrosion-protection-Spring-loaded-ball-bearing-for-secure-socket-holding-Sold-loose-br-br-B-Manufactured-&-tested-generally-in-accordance-with-DIN3122-&-ISO3315-Specifications-B-br-br-p-Draper-Expert-10170-100mm-3-4-Square-Drive-Extension-Bar