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 Grindstone has become a foundational tool for serious climbers worldwide.
Key Features:
Full Width "Bar-style" Top Jug
50mm center one-arm edge
30mm edges
25mm edges
20mm edges
15mm edges
10mm edges
8mm edges
Top phone slot for timer
