I've been offered a surface grinder

[Mayhem]

Thanks Sunset. Fortunately I have already made up puller and the pin wrench will also be an easy job.

Besides $30, what is the difference between a 7" and an 8" adaptor? I cannot see anything in the first link that suggests that adaptor is a 7" one. My guess is that the 7" doesn't have the balancing weights, as Ken had mentioned this previously. Also, what is the that poking through the nut/washer in the picture??