These Spectrum Metal Detectable Crayons are industrial wax crayons designed for marking containers, equipment and surfaces in food manufacturing and other general industries. The crayons are made from hard wax and their iron content makes them easy to find if they end up in food grade packaging.
•Metal detectable crayons made from hard wax
•Iron content makes them easily to find in food grade packaging
•Ideal for marking containers, equipment and surfaces
•Pack of 80 blue unwrapped crayons