12" Long
2.5" Width
1/2" deep rounded lip
Difficulty: Moderate, In bouldering terms doing 5 pull-ups on these would be around V2
This is actually the 10th version of the Limiter i've designed so far. (Limiter 1 in 2016!) It is a slight improvement on the Limiter 3.  The corner at the top of the lip has been filled in, making it a little more slopey, but it also spreads the load, instead of concentrating it on a small part of your fingertips.
Texture Change: Updated from the striated version, to a very fine 200 grit sandstone texture.  It's grippy, but very fine.  
This product can be fastened to just about any wood surface, including the doorway using #9 Star-Drive Deck Screws. (included)
If you are familiar with the Limiter 3, these are going to feel very close.  For a beginner Vertical Limit / Pinch strength trainer, I really don't know how they could be improved!
 
My goal which I have finally accomplished, was to create a product that is easier than original obstacle called 'Vertical Limit'. I wanted to be able practice higher reps at lower intensity. 
Get a pair for the door way, or get the 10 Pack and set up the full 20' obstacle for your gym!
Designed and produced by @3ballsteve (Steve Dison)
Released 2025/11/15.