We listened to your feedback so this new and improved version now includes a set screw to lock the adapter in place along the shaft as well as stops at both ends to keep 1 in. wide items, like wheels, exactly where you want them.
What an upgrade!
These are much better then the older sleeve versions. I will use these on more of my builds going forward. Would love to see these in longer lengths.
Good adapter for 1" wide wheels/pulleys
Nicely machined. A 6mm diameter D-shaft will slide all the way through the bore. Threaded on one side for 1/4-20 screw.