Networx Fiber Optic Keystone Coupler - LC to LC Multimode Duplex - White

Are these sc upc or sc apc type keystones? being blue i expect they are upc as apc are traditionally green, but wanted to verify.

Hi there, i'm looking for just the blank insert in packs of 50. just the white part that's shown in the picture. Do you sell these like this?

I'm using ubiquiti simplex lc to lc single mode fiber. can i use these in my keystone rack?

Will these fit ICC wall plates?