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 10x7mm and PH2