The 5 Small Angled Pinches Set #1 is appropriate for intermediate to advanced rock climbing routes. They offer various angles and sizes, making the set rather versatile, and are best suited for vertical to slightly overhanging walls. For a more difficult set, check out 5 Small Angled Pinches Set #2.
Nick Eubank
Helpful for making a relatively vertical wall trickier, and good value
My six year old has gotten too good too fast, so I've been looking for things to make our vertical wall harder. These are the trickiest (with small hands they "seem" bigger than they do to an adult climber), but are definitely pushing her. And great value for money.
Conor Dube
Thought provoking
This is an interesting set of pinches - there are a ton of nuances around what angle and what side of the hold you set into a problem that can really change the difficulty. They are definitely small and tricky - on my 45 degree wall you could easily set a double digit boulder with these, and even with good feet and other holds you're not gonna get much below hard V4.
nicolas lowe
Pinch Trainers
I purchased these knowing that they would be super hard. I use them on my 40° wall for training endurance and hard sit starts. These easily fall into the latter category. Rotated vertically I can hold them for the start and then bump a short distance to a mini jug. If I have one good handhold then I can use the other to start on one or transition into and out of it. I am a V4 climber, but pinch strength varies so much in the community I find these hard to rate. Probably V5-6 oriented vertically and V3-4 horizontal for the easy piece. The smallest two are way gnarly and beyond my scope as a V4 climber. I like this set because two sets
can be "mirrored". They are similar enough I can use them to make a right hand and left hand version of a route on a small wall. Perfect for training. I want to find a way to use these for pinch training in my home gym with some creative cobbling.