Aluminium knuckle duster with spikes

So this is a new knuckle duster that was made recently...

It is made from 11 millimeters thick alluminium and measures 102 x 60 millimeters.
Palmrest is slightly curved, which gives much much better grip in hand than straight.

It is slightly small for my hand size, but I think, that would still be very usefull.

It has sanded finish, so that's where is that matt color from.