Based on this product's specifications, here are some alternatives and similar models
Brake pads Clarks compatible with PROMAX models DSK320 DSK400 DSK610J DSK50J DSK700 XNine (MPN CLA-VX829C)
Summary description:
Replacement brake pads from Clarks designed for use with PROMAX caliper models DSK320, DSK400, DSK610J, DSK50J, DSK700 and XNine. Sold under manufacturer code CLA-VX829C (EAN 5021646008705), these pads provide friction material for rim or disc braking systems specified by PROMAX. Intended for routine maintenance and pad replacement to restore braking performance and safety on compatible bicycles.