Based on this product's specifications, here are some alternatives and similar models
Handle Zebra TRG-NGTC7-ELEC-01 for TC73 TC78
Summary description:
The Zebra TRG-NGTC7-ELEC-01 is a handle designed for the TC73 and TC78 mobile computers. It enhances grip and handling, making it easier to operate the device in various environments. This accessory is essential for users who require a secure hold during mobile tasks.