This is a sturdy plastic and rectangular Sand Forming Box, size 150 x 100mm.
It is designed in two parts - each part is 40mm high and has two holes at the top of each side through which sturdy iron pins can be drawn to secure the two box parts over eachother.
Fill the Sand Forming Boxes with Tin Casting Form Sand (Part No: AR42446) to cast an object.
Size: 150 x 100mm
2 part - 40mm high