️ Key Sizes & Types Square Wrench: 4-5mm, 6-7mm, 8-9mm | Triangular Wrench: 8-9mm, 11-12mm, 14mm | Tapered External Square Wrench: 6-10mm | Pointed Wrench: 3-5mm - Fits many engineering locks and counter boxes. ️ MULTIPURPOSE - Ideal for architects, janitors, technicians, property managers, fire brigades - provides quick access to meter boxes, technical rooms and facilities. ️ DURABLE QUALITY: Made of high quality die-cast zinc - durable, resistant and reliable in daily use. ️ Multifunctional tool: for radiator ventilation, electric cabinets, gas and water meters, fire access points, elevator and train doors, sanitary facilities, boiler rooms, ventilation and air conditioning, garbage rooms and much more. ️ For professionals and DIY enthusiasts: ideal for electricians, installers, heating engineers, maintenance services and passionate hobbyists. ️ ERGONOMIC DESIGN: Compact length (7.5cm) and thoughtful shape for comfortable and efficient handling. ️ EASY IDENTIFICATION Each key is marked with shape and size details - for quick selection and hassle-free use, Weight: 0.09479877266 Pounds, Manufacturer: Millenium Works