More Tonka toys than Mining Magnate, I'm sorry to say!
These cufflinks have a t-bar connected to the base - in the photo the t-bar is through the white surface underneath. We do not supply them without the t-bars (because they wouldn't be cufflinks).
Dimensions (LxWxH): 23mm x 10mm x 12.5mm (approx.)
Weight per cufflink: approx. 11g (heavy)
Size = x mm (W x H)