These little connectors are fantastic, they make wiring so easy, simply pull up the lever and pop the stripped wire in and pop the lever down again.  You can use different wire sizes into 1 block, anything from 0.08 to 2.5mm²

SPECIFICATION
Brand    Wago
Colour    Grey
Manufacturer Guarantee    2 Year Manufacturer's Guarantee (T&Cs Apply)
Product Height    14.5 mm
Product Length    20.5 mm
Product Width    17 mm
Total Product Weight    0.0042 kg
3 conductor entries. 32A. 400V. 0.08-2.5mm² solid and stranded (7 strand) conductor. 0.08-4mm² fine-stranded (flexible). Strip length 9-10mm. Max. service temp. 85°C.