Whitefurze Allstore Plastic Storage Box & Lid 0.55 Litre.
British manufactured very similar to Really Useful Boxes.
Range available in 33 different sizes.
Clear base with clear lids.
Stackable.
Clip lock handle locks lid into place.
Reinforced base and corners provide strength and durability.
Measurements: 180mm long x 110mm wide x 50mm tall.