Based on this product's specifications, here are some alternatives and similar models
Screwdriver flat-tip Top Tools 6×150 mm model 39D644
Summary description:
Flat-tip screwdriver Top Tools model 39D644 with a 6 mm blade width and 150 mm blade length. Designed for manual fastening and loosening of slotted screws in general repair, assembly and maintenance tasks. Provides a straight flat tip for contact with slotted screw heads and is suitable for use in workshops, construction sites and household repairs.