Tube Shank (39107/39108/39109)

The counter pressure from the spring mechanism is surprisingly smooth and consistent, making each pull feel controlled. I've been using it for a few days now and it hasn't lost any tension or required any adjustment. Exactly what I needed for the job.

I was a bit skeptical about the spring mechanism at first, but the consistent counter pressure makes each pull feel precise and controlled. It’s noticeably smoother than my old setup during repetitive use.

The counter-pressure from that internal spring is definitely noticeable when you pull the lever back—it makes the action feel much more controlled than I expected. Took me a minute to get used to the resistance, but once I did, it worked exactly as described. Solid build for the price.