Features: brand new and high quality The heat shrinkable butt connector uses a copper core with a higher thickness grade. This makes your connection project more secure. Translucent heat-shrinkable tubing provides high tensile strength and stretch resistance, and minimizes mechanical damage. The inner wall of the heat shrinkable tube has enough hot melt glue to ensure the reliability of waterproof performance. The tubes of different colors are marked with easy-to-identify wire gauges. It is widely used in automobile, shipbuilding, electrical and electronic industries and other fields. Specifications: Color: Blue/Pink/Yellow Material: Tinned Copper Interface Type: AC/for DC Working Frequency: Low Frequency Package Includes: 100Pcs Butt Terminals note: 1.Please allow 1-2cm errors due to manual measurement, make sure that you do not mind before you order. 2.Due to the difference between different monitors, the picture may not reflect the actual color of the item.