The Knipex 00 11 01 TwinKey® Service Cabinet Key is designed for the actuation of locking systems from the areas of facilities engineering (heating and sanitation, air conditioning, electro technology), gas and water supply and shut-off-systems. Consists of two 4-way spider keys connected using magnets providing space saving storage. It has a weight-optimised, zinc die-cast design. It has the following functions: 4 x Square: 5, 6-7, 8-9 & 10-11mm. 3 x Triangular: 7-8, 9-10 & 11-12mm. 1 x Two-Way: 3-5mm. 1 x Half-moon: 6mm. 1 x Long Execution Conical Square: 6, 7, 8 & 9mm. 1 x Reversible Bit (Slotted 1.0x7mm and PH2).