* Manufactured and tested generally in accordance with DIN3122 and ISO3315 Specifications * Draper Expert Quality * Manufactured from chrome vanadium steel hardened, tempered, chrome plated and polished * Corrosion protection * Spring-loaded ball bearing for secure socket holding | Article: DRAPER 3/8'' (F) x 1/4'' (M) Socket Converter | Article: DRAPER 3/8'' (F) x 1/4'' (M) Socket Converter