Based on this product's specifications, here are some alternatives and similar models
Hand Trainer THOMS TS-PTE5100GR adjustable resistance 5–100 kg with built-in counter
Summary description:
Adjustable hand trainer THOMS TS-PTE5100GR provides resistance from 5 to 100 kg and features a built-in counter to track repetitions. Designed for grip strengthening, rehabilitation and sports training, it suits progressive loading and precise monitoring of sessions. Compact and portable, it helps improve hand strength, endurance and recovery.