The ends are curved 3/4" (18.8mm), you can file them to 11/16" (17.2mm-18mm).
Spring bars are included, remember to tell us what size you need.
The length at the spring bars is 6 3/8" (162mm).
We can shorten it for no extra charge and might have links to add, send a message with length you need before purchase and we'll see if it can be done.
