I'll try to get some pictures over the weekend. I do not have any spare needles for my 532 so picture will be on the baler. Will try to do a close-up. I do have one spare 250 needle off of my parts baler and will photo that with a tape measure on the part.
I grabbed the knotters and one needle off a 250 being scrapped, and when I got home I discovered the needle was actually one for a 532/542. It's now on my 532 replacing a welded one that rebroke.
Send me your email so I can send to you as an attachment.