These are 600um core, NIR 0.22NA, 3.5 meters long, SMA to SMA jumpers.
Both ends are AR coated to <0.30dB for 790-1000nm.
There is no air space around the fiber at the front of the SMA's, but these are used at 60W CW and more.
Jacketing is 2.8mm ETFE over a Kevlar braid.