Based on this product's specifications, here are some alternatives and similar models
Mitre box Dedra 1239-04 — manual angle cutting guide, 1 pc
Summary description:
Dedra 1239-04 mitre box is a manual angle cutting guide supplied as one piece. It provides fixed angled slots for accurate hand cutting of mouldings, skirting boards, small trim and timber using a saw. Suitable for domestic DIY and light workshop tasks where simple, repeatable angled cuts are needed without power tools.