The GEDORE BLUE 28mm socket wrench insert is designed for precision, durability, and reliable manual operation. Built for professional or workshop use, this insert is manufactured from high-quality chrome vanadium steel (31CrV3) and complies with DIN 3124 and ISO 2725-1 standards. *** Key features include: **- Size and Fit: 28mm width across flats with a 1/2 inch square drive connector (12.5mm), compatible with standard ratchets and wrenches. *- Material Quality: Made from hardened chrome vanadium steel (31CrV3) for high strength and longevity. *- Surface Finish: Polished and chrome-plated for corrosion resistance and a clean, professional appearance. *- Secure Operation: Non-slip cross knurling provides improved grip and control during manual use. *- Precision Engineering: Square drive designed according to DIN 3120 - C 12.5 and ISO 1174 with ball retention groove for secure connection. *- Compact Design: Working length of 43mm, making it ideal for applications in confined spaces. ***Technical specifications: **- Width across flats: 28mm *- Insert diameter: 38mm (Ø1), 30.5mm (Ø2) *- Operating depth: 20mm *- Total length: 43mm *- Drive type: 1/2 inch square *- Surface: Polished, chrome-plated *- Usage: Manual **Whether for automotive, mechanical, or industrial work, this socket insert ensures dependable performance and precise fitment for 28mm fasteners.