Easy to install: This auto switch holder is easy to install, can be installed on any flat panel or wall Practical Function: The holder support automatic detection and manual recovery, practical and useful Widely Used: Mainly used in the modification of audio?visual systems such as automobiles, ships, trucks, etc., and can also be used in other circuit safety systems Stud: 1/4in-28 Operation Method: Electronic Colour:Black Material:plastic Specification:60A Tips: The product may be updated constantly ,Due To Different Batches, The Actual Product May Have Slight Differences Or Color Differences, Which Does Not Affect Use Package Contents: 1 * circuit breaker Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.