Magnets are built into the head of the tong, designed to attach to the toaster/fridge for convenience.
Wood is natural & organic. Cracks might appear, it can naturally warp, create a curve and change colour over time due to environmental factors. We cannot predict or control the changes in the environmental conditions once our products leave our workshop. Wood is hydroscopic, it naturally absorbs and releases moisture to balance its internal moisture content with its surrounding environment.