These very unique cufflinks are anatomically correct models of the femur -- the largest bone in the body and in our thighs!
The 2 cufflinks are mirror versions of each other - just as the two inside our legs are.
These make a great one-of-a-kind guy gift for someone in orthopedics or the medical field (i.e. doctors, nurses, students, residents).
Note: these cufflinks do not have gears on them, and 'work' very simply by slipping and angling the rod and bar through the cufflink hole. The 'rod' (perpendicular to inner ear) stretches out .9 mm before intersecting with the bar. The 'bar' (horizontal to inner ear) measures 1.3 cm in width.