I've created sleeves to adapt a 28mm regular shaft to Olympic-sized attachments. This isn't the common 25mm size. With these, you won't have to use rubber fat grips for T-bar rows. Most importantly, you can use Viking press attachments and other equipment that are only available in Olympic size with a regular shaft. Welding and painting were done by an amateur, but there are no issues with use. The item for sale is shown in the first photo.