metric, identical end sizes extra-long version for hard-to-reach bolted joints and higher force transmission jaw angled 15° ring with bi-hex ring-end cranked 10° AS-Drive profile prevents damage to edges reinforcement between jaw and shaft durable, slim and lightweight design high flexural strength due to double-T profile STAHLWILLE's rounded finish ensures a non-slip, pleasant feel drop-forged, hardened, and cooled in an oil bath Chrome Alloy Steel, chrome-plated DIN 3113 Form B/ISO 7738 Form B safely integrated in the modular Tool Control System (TCS)