Handheld Dynamometer Hand Grip Power Meter Strengthened Muscles 130kg or 287lbs Red Ear: 12x8 cm or 4.7x3 inches Material: made of PP and ABS material, durable and wear-resistant, less rusting and not easy to damage Ergonomic: ergonomically designed to fit small and large hand sizes, ideal for men, women, seniors and teenagers, can be used anywhere Function: Designed for athletes and sports enthusiasts, this product can increase the strength of hands, wrists, forearms and fingers, relieve fatigue, strengthen muscles Hand Amplifier: Great hand amplifier for rock climbing, shooting, bodybuilding, golf, tennis, musicians including drummers, as well as guitarists, pianos and violinists Occasions: Ideal for family, sports, and clinical use, physical education, this product can train hand strength - Inner mesh panties Name: Manual Dynamometer Weight range: 0130kg Function: Increase finger strength, hand strength Parts of movement: arms, hands, fingers Material: ABS PP Size: 100mm x 135mm x 20mm or 3.94 inch x 5.31 inch x 0.79 inch The package includes: 1-piece manual dynamometer