The holes are about 14.7 cm apart. The handle shape is designed to be as similar to the original as possible, with different ends that should be a bit more durable. I recommend printing on the side with a brim, either with solid infill or a high wall count (to fill the entire part with walls).

CAD:

https://cad.onshape.com/documents/af429632a3a28b7d676c3222/w/9371831968c921ad1ff6dbba/e/550d0becb19b192a3667c57e