The Snap-On Tools MT3000-430S Black Back Probe Adapter Set includes 3 pieces in a plastic case, making it convenient to store and transport. Designed by the reputable brand Snap-On, these adapters are essential for automotive diagnostics. The set is specifically made for electrical testing and provides accurate results for troubleshooting issues in vehicles. Perfect for mechanics and automotive professionals, this adapter set is a valuable addition to any toolbox. Please see the photos and thanks for looking.