At Home DVDs
Pro DVDs
Shop for DVDs by Level
Reformers
At Home Equipment
Light Equipment
Power Packs, Combos & Workout Kits
Commercial Equipment
Bundles
Equipment Accessories
Replacement Parts
Promotional Items & Gifts
Educational Materials
Music & Apparel
Merchandisers
Overview
Training Dates & Locations
Instructor Finder
Programs & Certification
Workshops/Continuing Education
Specialty Tracks
Exam FAQ
Applications & Required Materials
Toronto Studio
Full Solutions Overview
Become a Host Center
Studio Space Planner
Tools
Rehab Business Solution
Testimonials
Our Method
Trade Shows & Conferences
Newsletter Archive
News & Articles
FAQs
SPTV
Contact Us
Catalog Download
All springs are nickel-plated and heat-treated to protect the base material of the spring. This ensures the quality and integrity of its tension throughout its life.
Spring Resistance Details
The overall length of the spring is 18.628”with an initial tension of 14.75 lbs (load required to open the coils without extension) and a spring rate of 3.888 lb/inch (load required to extend spring every inch after the initial tension is applied). Each spring is nickel-plated and heat-treated to protect the base material of the spring. This ensures the quality and integrity of its tension.