**Product Specifications:**
**Brand:** xinyiwanjia
**Suitability:** Suitable for 90% of users, including basketball, badminton, and weightlifting enthusiasts.
**Main Uses:** Strengthening forearm and wrist muscles, climbing, wrenching, badminton, table tennis, basketball, weightlifting, student exams, and other strength training activities.
**Recommended Weight:** Different weights for left and right hands, typically heavier for the right hand.
**Product Features:** Professional grip strengthener for forearms, PROFESSIONALGRIP.
**Included Accessories:** Hand gel + sponge cover.
**Product Dimensions:** 13cm x 9.5cm x 7cm (approximately), 1.8cm handle diameter, 11cm length.
**Advantages:** Fast shipping, trusted by over 100,000 customers, 3-year warranty, free replacement for damages within 3 years (excluding hand gel and sponge covers), 15-day return policy.
**Materials:**
1. High carbon steel spring for good elasticity, uniform durability, and corrosion resistance.
2. Solid aluminum alloy with textured surface for anti-slip grip and hand protection.
3. High-density sealant for temperature resistance and durability.
**Brand Logo:** Laser engraved xinyiwanjia logo.
**Strength Level:** 200, suitable for strengthening hand muscles for various sports enthusiasts and muscle groups including biceps, wrist flexors, brachialis, wrist extensors, and fingers.