1、PRODUCT QUANTITY: Including 200pcs heat shrink tubing and 100pcs solder wire connectors, sufficient quantity for easy use and replacement. 2、SIMPLE CONNECTION: Clear sleeve allows wires to be inserted inside, adhesive fills the gap and prevents wires from slipping out of the connector. 3、EXCELLENT MATERIAL: The solder connector is a combination of thick shrink tube and low temperature melting solder sleeve, which is waterproof and sealed. 4、WITH STORAGE BOX: All connectors are in one storage box, with 5 different sizes enough for home small electrical appliance repair needs. 5、WIDE APPLICATIONS: Widely used in the production of simple, permanent and weather resistant connections in the electrical field with high practicability.