They're called 1, 2, 3 blocks for everything, why? Well after a lot of research they measure exactly 1" X 2" X 3" (inches) and are the perfect dimensions. They can be used together and you can buy them with mounting screws (I don't have them) but i me didn't buy them for this. Every craft I make takes 1,2,3" and you need weight to hold the fabric or material and sometimes you need a perfect 90 degree angle. These blocks are like that convenient that im not sure why i dont buy them like i did 20 years ago they come in a set and are covered in machine oil so be careful use gloves to clean them bonus, they are cool to look at but honestly you can use them as pen holders Great addition to tool kits or hobbies.
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