Review on Enhance Hand Grip Strength with New Material Hand Grip Strengthener Set (6 PCS) - Effortless Finger Exerciser, Effective Grip Strength Trainer for Forearm Workout, Finger Stretcher, Wrist Pain Relief, and Carpal Tunnel Comfort (Large) by Scott Koeck

Another rock climber here and was hoping to replace my grippers that are starting to crack with age. I guess I should have scrolled down more through the reviews as these are not "large" (see pic), and I seriously doubt they match the claimed force to close them. The most difficult one (claimed 50 lbs) is easier than the lightest donut (30 lbs) I have from my previous brand. If you have small hands and are looking for light resistance for therapy these might work for you, but they are way too easy for climbing workouts IMO. (And I don't have what I'd consider to be vice-grip hands, hence the reason for these in the first place.)