Frequently Asked Questions
Three spring levels, adjustable individually — start light with one spring engaged and progress as your pressing and pulling strength builds.
Both. Use the expander for chest and pulling movements, and the bar for arm, shoulder, and grip work. It's two tools in one unit.
Yes. The grips are textured and contoured so it doesn't rotate or slip mid-rep, even with sweat.
The springs are pre-tensioned steel — you can adjust levels by moving the clip. The grip bar is fixed-length steel.
Yes — unused, in original packaging, within 30 days of delivery.
CoastStrength™ Adjustable Arm Strengthener
Grip bar and chest expander in one — 3-level adjustable resistance for arms, chest, and grip.
- 3-level adjustable resistance for progressive training
- Chest expander springs plus grip bar in one tool
- Textured non-slip grips for secure hold
- Compact enough for any home gym corner
Color· Lake Blue
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The Details
Why it earns its spot
3-level adjustable resistance for progressive training
Chest expander springs plus grip bar in one tool
Textured non-slip grips for secure hold
Compact enough for any home gym corner
Verified Reviews
What buyers actually say
"Three resistance levels means it grows with you. Chest and arms both burn after 20 minutes."
"Great pump tool. Takes a couple sessions to find your spring level, then it's perfect."
"Bought it for grip and arm work. The expander springs feel consistent and well made."
Zero Risk
Try it for 30 days. Keep it if it performs.
Every order is backed by our 30-day return window. If it doesn't hold up in your training, send it back — no hassle, no hoops.
Adjustable Arm Strengthener
Lake Blue