Ruland SP-20-F Two-Piece Clamping Shaft Collar, Black Oxide Steel, 1.250" Bore, 2 1/16" OD, 1/2" Width (Pack of 2)

I don't like the fact that it uses standard allen head bolt 3/16. Otherwise no complaints, I use accustomed to metric everywhere else.

I saw these installed on the engine guards on the instructor's motorcycle while taking Ride Like A Pro-Maryland, as he demonstrated how to properly pickup a 900+ pound motorcycle. During the class, he purposely dropped the bike for a class demonstration. As the bike was tossed to the ground, I noticed that the instructor had these collars installed protecting the e saddle bag guards (I also ordered the 7/8" for the saddle bags guards). Since installed, I've had many bikers ask what are they, and what are they for? I give credit where credit is due, I refer them to ride like a pro Maryland Facebook page where you can hear it from a pro, too include pictures for proper install. If you don't have a FB account, you can still access information and pictures. Awesome class. I have them installed on my 2018 HD Street Glide Special..Have a wonderful day

The screws started 2 rust right away.

The Ruland couplings were easy to install and adjust. They hold very well.

Well machined so collar tightens down snug onto shaft.

Worthless

Does exactly what it's supposed to.

For my project, the locking collars worked great!