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Matrix Aura Back Extension — 360 Sports Products, 60% OFF

X Factor Hyperextension Roman Chair Hyper Bench Hyper

Precor Resolute Series Back Extension

The Horizontal Back Extension

Precor Vitality Series Back Extension (C011)

Single Station Strength - Fitness Experience Commercial

ULTRA - Back Extension

Single-Leg Back Extension

Life Fitness Back Extension Tutorial

Back Extension Instructional Video