Don't let the name fool you: this bodybuilding classic targets the back, triceps, biceps, and more. It's been a staple in bodybuilding for over a century for its effectiveness and versatility in building lean, defined muscle with that wiry, natural look.Built for progression, this steel contraption has 7 springs with carabiner attachments, so you can remove or double up springs, adjusting the tension to suit your goals and experience level. Beginners and pros alike can use this for curls, flyes, and rows or attach to a fixed point for presses. Grab two for even more versatility (shameless upsell!)The chest expander offers consistent tension throughout the movement regardless of how many springs are attached, making it optimal over bands for bodybuilding. The design hasn't changed much over the past century because it hasn't needed to, but we've thrown on rotating handles and knurling for that cherry on top of a swole sundae.Watch your arm hair, though—and if you see Kaevon walking around looking smoother than a baby porpoise, mind your business. IMPORTANT: Use a minimum of two coils on opposing ends of the handles to avoid over-stretching the coils.