This barlow is in excellent condition and includes the end-caps. Purchased it for use on my AP refractor, and replaced it with an AP barlow, when they began offering it.
This barlow was manufactured by Vernonscope, famous for their Brandon oculars and Dakin barlows. It utilizes a nylon set-screw to avoid marring your eyepieces. Original owner - I'm clearing out items I no longer actively use.
$125 including priority shipping in CONUS