🟢 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.
