Ergonomic handle

These handles are actually part of a bigger project I'm working on, but it's so non-standard-parts-specific that it doesn't worth the effort of publishing the entire project by itself. I first designed the handles to fit pre-made holes on a aluminium heat dissipator, but later, I adjusted it to fit in given percentiles, so it can be truly "ergonomic". The original one has a hole to hole distance of 10cm, and it fits the percentile 1 of male's hand, and 75 of woman's (_m01_w75); the second one has a distance between the screw holes of 11cm, and it is for percentile 35 for male and 99 for woman; the bigger one has a distance of 12cm and a percentile of 99 for male. These values are those for hands fitting comfortably, bigger hands could use it anyway. For those who don't know about percentiles, lets say that, for a given population, a P percentile corresponds to an X body part size (or weight) if P% has that part size smaller than X. If you know about this, these values are upper values