Size markings and item numbers are engraved on each wrench for easy identification. Drive, 5/16 in. SAE Crowfoot Wrench Made with 4140 Chromium-Molybdenum steel. They're optimized for both access and strength by using steel only where it matters and eliminating excess.
Application for Metal; High-quality wire thread inserts strengthen thread and provide for longer thread life. STI Tap size: M5-0.80 Thrd Sz, 18-8 Stainless Steel, 100 PK These inserts can also be provided with full traceability and conformity certificates.