New style plastic tower.
It has 1508s in the upper spinner. Had 2505s in both side spinners.
I told a supplier to send me what they thought it should have, I was at work didn't look beforehand. They sent me 2(?) 2506s. I found another in the control room and put in the lower spinner, 7 2505s which I put three in the upper side spinner. They're high impact tips. From what I can tell do a good job, but curious what they should be and why.