Doll Family H jointed hand size

Just for future reference, most companies list their joint size for hands by diameter and not circumference! I find it weird, but oh well.
DF-H 1/4 jointed hands are 1.3cm! Hope that helps.

 

Here is a DF-H hand (left) next to a ruler so you can get a better idea of the measurements.
I measured the ball 14mm, but it's not a perfect sphere, so expect small veriations in measurements. Diameter is easier to measure exact compared to circumference.


The hand on the right is a Dika Doll female hand, for reference. It is smaller and more delicate and the fingers are a lot less snappy, making it easier to pose. The Dika Doll hand has a slightly larger joint ball, but it will mostly fit the same sockets.

It is worth noting that the DF-H hand is BIG. It's bigger than the default hands made for the same body and it's way too big for most slim minis. It sort of works of the df-H body it's made for once you've gotten used to the look. I have even seen people use it on female SD-sized dolls.
But I am not familiar with the Impldoll body you mentioned, so perhaps it will work for that.