Asymmetrical edge layout ensures equal grip spacing for each edge size, providing a uniform training stimulus
Custom edge profile eliminates pressure points, allowing training with 1, 2, 3, or 4 fingers without designated pockets
Progressive edge depths from 8 mm to 50 mm support structured finger strength protocols
Full-width top jug and engraved edge depths enhance grip feedback and training precision
Comfortable, smooth surface and poplar wood construction maximize durability and user comfort
The Grindstone is a precision-engineered edge training platform designed to meet the demands of climbers across the performance spectrum.
It features a comprehensive progression of edge depths paired with Tension's signature edge radius profile that maximizes comfort while training.
Ideal for structured finger strength protocols, the Grin
Edge depths
8 mm, 10 mm, 15 mm, 20 mm, 25 mm, 30 mm, 50 mm
Edge radius
Custom profile (signature edge radius)
Material
Poplar wood
Mounting type
Bolt-on
Dimensions
23 x 7 x 3 in (approx. 22 x 6 x 2.75 in)
Weight
5 lbs
4.9
23 ratings
5
4
3
2
1
Awesome board
The wood feels so good on the fingers. I love training on the different depths and having the jug option for pull ups. Awesome board!
A
Anonymous · September 21, 2026
Tension Grindstone
R
Russell · August 31, 2026
Very pleased with the hang board. Bought it for my Son and He loves it.
