Highlight description:[Color Code Design] The package includes 250pcs heat shrink wire connectors, which contain AWG12-10, 16-14, 22-16 butt, ring, fork, male and female quick disconnect connectors. It is designed with color-coded tubing with wire gauge markings for easy identification. [High Electrical Conductivity] the premium copper provides excellent electrical conductivity, which can add current flow and reduce voltage instability. It prevents wiring failures and reduces equipment downtime. [Secure Crimping] Each terminal has a sturdy copper barrel to hold the wire securely when crimping. Translucent heat shrink tubing has high tensile strength and resistance to stretch and mechanical damage. [Safe Connection] You can use wire crimping machine to remove wire insulation, crimp the connector barrel, then apply heat with a heat tool or small flashlight. It can build a secure, long-lasting connection in seconds without soldering kit. [Marine Grade Terminals] Our electrical wire terminals kit meets marine vehicle and other manufacturer specifications for wiring repairs required to maintain electrical warranty. For best results, use your heat tool until it reduces in size and the adhesive flows, filling the gaps within the terminal. Detailed description:Product Name: Heat Shrink Wire Connectors Material: Copper + PE Size: 19×13×3.6cm Color: Colorful Shrinkage ratio: 3:1 Working temperature: -55℃-125℃ Initial shrinkage temperature: 80℃ Complete shrinkage temperature: 130℃ Red 22-18 ga. Heat Shrink Ring #10, 1/4inch, 5/16inch and 3/8inch 20 pcs., 40 pcs Red 22-18 ga. heat shrink butt splice, 20pcs Red 22-18 ga. male and female quick disconnect 20, 20 PCS Red 22-18 ga. SPADE terminal "fork" for stud size #10, 10 PCS Blue 16-14 ga. heat shrink ring #10, 1/4inch, 5/16inch and 3/8inch. 20 pcs., 40 pcs Blue 16-14 ga. heat shrink butt splice, 10pcs Blue 16-14 ga. male and female quick disconnect. 20,20pcs Blue 16-14 ga. SPADE terminal "fork" for stud size #10,10pcs Yellow 12-10 ga. heat shrink rings #10, 1/4inch, 5/16inch and 3/8inch. 20 pcs., 40 pcs Yellow 12-10 ga. heat shrink butt splice, 10 pcs Yellow 12-10 ga. male and female quick disconnect. 20, 20 Yellow 12-10 ga. SPADE terminal "fork" for stud size #10, 10pcs Notes: 1.There may be slight differences between the picture and the actual color of the commodity. We will try our best to show you the exact color. 2.Please allow slight dimension difference due to manual measurement. Parts List: 250×Heat Shrink Wire Connectors 1×Plastic Box