This multi-functional grip strengthener is your ideal partner for strength training and emergency safety! Featuring ergonomic design with high-strength stainless steel spring and anti-slip silicone grips, it offers secure, fatigue-free workouts and fits all palm sizesilicone-covered handles— the silicone covering ensures anti-slip performance and effectively prevents hand strains and blisters during use. It fits all palm sizes for comfortable workouts. With adjustable resistance (11-220 lbs), it suits beginners, pros, and even those in rehabilitation—twist to customize intensity. The built-in battery-free mechanical counter (0-100 reps) tracks progress easily, resettable via bottom dial. Any issues? Our 18-hour after-sales support ensures a satisfying solution!