Based on this product's specifications, here are some alternatives and similar models
Impact Socket 3/4" 21mm (6-point) Rockforce RF-46521
Summary description:
Rockforce impact socket 3/4" 21mm (6-point) RF-46521 is a single hexagonal socket designed for use with impact wrenches and pneumatic guns. Sized for 21 mm fasteners and a 3/4" drive, it provides secure 6-point contact to reduce rounding of bolts. Suitable for automotive, agricultural and industrial maintenance tasks that require high-torque fastening and loosening.