These washers are made for brass or for Hinderer ,they are very durable and smooth.
They break in nicely and make for a smooth opening .They instantly and noticeably improved the action on your Hinderer
Just physically your tolerance lock bar stabilizer against another brand or model to see if it fits before purchasing
In order to lubricate more, you can apply oil before ,clean up dirt regularly
The measurements are 0.6mm thick, 10mm outside diameter, 5.2mm Inside diameter. You can 20 pieces