☆『What You Will Get:』In this set, we offer 6pcs 4 Awg - 5/16" (M8)ring terminals copper lugs tube end termination ring terminals for your work, 3Pcs black and 3 red 3:1 Dual Wall Adhesive Heat Shrink Tubing Tube. | ☆『High Quality:』All the ring terminals are made of 100% annealed electrolytic grade copper for maximum conductivity. All the 3:1 shrink tube is well made of high quality material, thick and durable.They are both for up to 600V, 257 degrees Fahrenheit which ensures its safe and reliable. | ☆『Reliable and Easy to Use:』Terminals with heavy duty construction improves high temperature durability and closed design seals out the moisture, ensure connection reliability; high standard flared opening for easy wire insertion.The wire shrink wraps are all pre-cut into the most common sizes which improve your work efficiency. | ☆『Wide Applications :』These Copper Lugs are safe and reliable, great for distribution box, marine, golf carts, solar panels, home applications, etc.Heat Shrink Tubing is Ideal Used for Vehicle, Motorcycle, Boat, DIY Electrical Wirings and Other Outdoor Applications. | ☆『Customized Protector:』Our copper lugs are made out of a high-grade copper to protect against corrosion can be soldered or crimped and fit solid or stranded wire,and heat shrink tubing has the advantages of good electrical insulation, good tightness and corrosion resistance, High temperature resistance. Especially the Heat activated adhesive lining provides impermeable seal to salt water and other liquids, which have better performance.