Stability Chair Spring Package YOGA BLOCK Functional Threshold Power (FTP) test

Functional Threshold Power (FTP) test Resistance: 20 Levels Drive Train: Conti Synchroforce® HTD and Hutchinson® FleXonic® Poly V® belts Power: Self-Generating Flywheel: 46 lbs

Product Specifications

All springs are nickel-plated and heat-treated to protect the base material of the spring

and can be doubled over as a quick way to shorten rope length

including multiple modifications

Stability Chair Spring Package YOGA BLOCK Functional Threshold Power (FTP) testThis replacement Spring package for Merrithew Stability Chairs includes 2 Heavy Chair Springs (red) and 2 Light Chair Springs (blue). Best quality springs available! Our springs are nickel plated and heat treated to protect the base material of the spring to ensure consistent tension throughout demanding studio use. Merrithew springs are built to withstand vigorous use in professional or commercial environments To maintain performance and warranty,