This is actually not the Maltese Cross, as the Maltese Cross has 8 points, which would be very sharp and probably dangerous if put onto your cuffs. According to Wikipedia, this is a; "cross patt eacute;e" which is a variant of the Maltese Cross. Isn't it lucky that Wikipedia could clear that up for us?
This pair of novelty cufflinks can be worn on ANY dress shirt with Shirt Cuff Adapter and come presented in a stylish box.
Dimensions (LxWxH): 19mm x 19mm x 3mm (approx.)
Weight per cufflink: approx. 6g (light)