Based on this product's specifications, here are some alternatives and similar models
Handle for leather cutting punches Beta 1105, for punch sizes 2–50 mm, model 1105T50
Summary description:
Replacement handle for leather cutting punches Beta model 1105 (1105T50), compatible with punch diameters from 2 to 50 mm. Designed to fit hand-operated leather hole cutters and round punches, it provides a secure grip and stable mounting of the punch holder. Suited for shoemaking, leatherworking and craft workshops requiring manual punching and clean circular cuts.