💪 Finger Strength Trainer – Dual-Ring Hand Grip Exerciser

🔧 Features：

🟢 Dual Rubber Finger Rings – ergonomic and comfortable for long-term training
🔘 Rounded End Design – fits securely in your palm and prevents slipping
🌀 High-Tension Spring – provides a resistance range from 6.6cm to 9.6cm

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🎯 A portable, durable tool to help build finger control, improve hand endurance, and support recovery training.