Based on this product's specifications, here are some alternatives and similar models
Hand striking flat wrench Rockforce RF-79150, 50 mm jaw, 270 mm length
Summary description:
Flat striking wrench Rockforce RF-79150 with a 50 mm jaw width and 270 mm overall length. Designed to be struck with a hammer for loosening or tightening fasteners where leverage and direct impact are required. Made for workshop and maintenance tasks on bolts and fittings of matching sizes; useful in mechanical repair, assembly and heavy-duty maintenance.