1 This is for Cherry MX switches only. I've got users messaging me about this key cap doesn't fit on his laptop keyboard. So it you dont know what Cherry MX is search and learn before you buy it.
2 Printing in strong & flexible plastic sometimes will have residues blocking the eye holes. It can be simply removed by poking it with tweezers or anything sharp.
3 Printing in steel and bronze will make this key very heavy, thus only suitable for heavy switches like Cherry MX Black.