[DURABLE CONSTRUCTION] Professionally designed with a high carbon steel structure, this finger grip trainer features a sturdy aluminum handle that is lightweight and provides a comfortable feel while delivering an effective workout. [Hand Trainers] Unlike bulky exercise equipment, these portable hand trainers can be used anytime, anywhere—at home, in the office, or while traveling—turning idle moments into productive training sessions. [Grip Strengthener] Ideal for improving forearm, arm, and wrist strength, these grip trainers offer an effective way to enhance hand strength and increase grip power. As your hands grow stronger, you can progress to higher resistance levels. [Perfect Combination] This set includes six grippers ranging from 100 to 350 lbs, increasing in 50 lb increments. The progressive resistance allows users to gradually build strength. Constructed with high wear-resistant materials for long-lasting durability. Material: High carbon steel + aluminum alloy Color: Silver + black Package Contents: 1 x 100 LBS grip strength trainer 1 x 150 LBS grip strength trainer 1 x 200 LBS grip strength trainer 1 x 250 LBS grip strength trainer 1 x 300 LBS grip strength trainer 1 x 350 LBS grip strength trainer Note: Light reflection and differences in display screens may cause the item's color to appear slightly different in images. Measurement may vary by +/- 1-3 cm.