This snap-on trigger handle is suitable for Zebra TC51 TC510K TC52 TC56 TC57 handheld barcode scanner mobile computer. Specially designed for Zebra TC51 TC510K TC52 TC56 TC57 and highly compatible with it. For use by baggage handlers, postal carriers, retail sales associates, warehouse employees and more. Part number: TRG-TC51-SNP1-01. Please check the device model carefully before purchasing. This trigger handle is made of high-quality plastic and is durable. After testing, it has excellent fall-resistant performance, which reduces damage to the trigger handle caused by falling and increases the service life of the handle. The handle features a snap-on design that can be easily installed or removed on the scanner, transforming the device into a full-touch handle terminal for high-volume scanning operations, saving you time and improving your work efficiency. The handle is tightly connected to prevent the scanner from falling off, providing you with a safer use experience. The handle grip is designed to the curve of the human hand, ensuring a comfortable grip during long-term use, reducing hand fatigue, and achieving efficient scanning. Both devices with protective cases and without protective cases can be used. The end of the handle does not block the charging port. You can directly use the single-slot cradle to charge without removing the handle, making it easier, more convenient and stress-free for you to use.