Check the listing for details. 1/8" Standard Hex Dogging Key 4Pcs Steel Wrench Key Rhombus-Shaped Loop Black. Condition: New. Listed at 13.59 USD. The Hex wrenches are widely used in end caps, key doors, bars, restaurants, security departments, locking parts, push rod emergency exit devices, patio door or other door lock equipment w this size.SpecificationColor: BlackMaterial: 45# Carbon Steel w galvanized surfaceHex Dogging Key Size: 1/8 inchSize: 70 x 21 mm/ 2.75 x 0.83 inch (L*W)Inner Diameter: 14.8mm/ 0.58 inchPacking List: 4 x 1/8" standard hex dogging keysAdvantage1. The hex wrench is made of durable 45# carbon steel w a galvanized surface, anti-rust, corrosion-resistant, high hardness, firm, fine workmanship, smooth and burr-free.2. The full loop design at the end provides a firm grip during use to prevent slipping and can be easily hung on a key chain.InstructionPlease check the hexagonal size clearly before use. It is only suitable for 1/8-inch door locks.