Purpose: For electrical works It consists of a handle, 5 bits and a storage box Set contains: 3 SL types: 0.5x3x100mm, 0.8x4x100mm, 1×5.5x100mm. 2 PH types: PH2X100mm, PH1x80mm. 1 triangle wrench key for electrical junction box. 1 square wrench key for electrical junction box. 1 handle for changing the type of screwdriver The screwdriver handle has a hole at the top for storage in the workshop The set is certified: 1000V VDE insulation