The Knipex TA001101 TwinKey is a universal, multifunctional key designed for comprehensive use across various locking systems in building services, gas and water supply, and shut-off applications. This versatile tool is ideal for accessing control cabinets, air conditioning units, ventilation systems, and general access panels. It integrates 8 different key types into two robust, cross-shaped keys, which are securely held together by strong magnets. Key profiles include square (5 mm, 6-7 mm, 8-9 mm, 10-11 mm), triangular (7-8 mm, 9-10 mm, 11-12 mm), a two-way key bit (3-5 mm), a half-moon key (6 mm), and a step-square key (6-9 mm). For added utility, it also incorporates a 1/4 inch bit adapter with a magnet. Constructed from durable zinc die-cast, the key measures 95 mm in length and weighs 0.135 kg.