yep...thats them. mine are stainless. with a 6-32 thread thru, here's a previous post on the subject..
Excalibur Owners: Please Reply!
i make a run of them when asked, i have two sitting here on my desk. if you need more than two, it may be a few weeks before i can run them.
when i run 10 they cost 145.00.....these are two extra i have from the last run. they're yours for 25.00 i'll throw in the priority mail for that too. unless your in alaska or hawaii....hehehehe.
contact info is in the linked post.....