grigri replacement handle XL

If you use you grigri2 for hightensioning like for slacklining the handle will break first. So you can use this part to replace it. Bigger than the original
25% infill I didn't test it in real condition yet but work very well in low tension already i'll try to update...
Enjoy
UPDATE 1 : I test it with really high tensionit work really well. But I noticed fristion because of the tension position of the grigri so I release the new version in the stl file name '*v3.stl", I also add a fillet o