Based on this product's specifications, here are some alternatives and similar models
Hand gripper Springos FA0151 adjustable resistance 10–100 kg
Summary description:
Adjustable hand gripper Springos FA0151 offers variable resistance from 10 to 100 kg for progressive grip and forearm training. Compact and portable, it suits rehabilitation, strength building, rock climbing or general fitness. Easy to adjust resistance to match fitness level and trackable improvement in grip strength over time.