|I have no idea who made these. I picked this one up in the late 70s and have only seen one other, but I'm sure they are in many vintage mechanic's collections. It is still the best tool I have for quickly tightening spokes because it is so easy to rotate. The fit on a 3.22 nipple is still tight after 40-50 years, so whoever made these knew what they were doing.
Does anyone have info on the brand?