Based on this product's specifications, here are some alternatives and similar models
Clamp AWTools AW20158 — 2.5 kg weight, metal workshop clamp
Summary description:
AWTools AW20158 is a metal workshop clamp weighing 2.5 kg, designed for holding and securing workpieces during assembly, gluing or cutting. Suitable for use in carpentry, metalworking and general repairs where a robust clamping force and stable fixation are required. Compact design for bench or portable use.