Based on this product's specifications, here are some alternatives and similar models
Hex Dumbbell Tiguar 20 kg — solid hex head weight for strength training
Summary description:
Tiguar hex dumbbell, 20 kg weight, designed for free-weight strength and functional training. Features a hexagonal head shape to prevent rolling and a straight knurled handle for secure grip during presses, rows and lunges. Suitable for gym and home use, weightlifting, muscle building and rehabilitation exercises where stable, compact dumbbells are required.