Thank you for viewing! [Product Details] ・Manufacturer: KTC ・Size: 27mm ・Shape: Hexagon ・Drive Size: 12.7mm (1/2) ・Condition: New, Unused I am selling this to organize my tools! I purchased it and have stored it long-term in a plastic bag without ever using it! Please understand that this is stored by a private individual, so please purchase only if you understand. If you have any questions, feel free to comment m(_ _)m