These lugs are designed to provide a solid link between battery cables and terminals, preventing power loss and voltage drops. Yale 505136046, SEAL KIT, FREE LIFT CYLINDER (Mast B508/B509) GLP050ZG, GLC050TG Insert the cable into the lug, crimp securely, and then use the included heat shrink tubing to seal the connection. Easy Installation: Installing the Selterm battery terminal connectors is straightforward. Package Contains: Each purchase includes 10pcs 4 AWG - 3/8" stud battery lugs ring terminal connectors, along with 12pcs 3:1 black & red heat shrink tubing with... Heat Shrink Wire Connectors 10pcs 4 AWG 38 Stud Wide Battery Lugs Ring Terminal Connectors Heat Shrink Tubing Heat-Resistant Durability: The Selterm copper wire lugs kit comes with 12pcs 3:1 black & red heat shrink tubing with adhesive. Lug Terminals, 4 AWG Gauge Wire, 3/8 Tin-Plated Copper Stud, 10 Pieces This comprehensive kit provides all the essentials for maintaining efficient and lasting battery connections. Strong Connections for Better Performance: Designed to perfectly fit 3/8 studs, Selterm battery lugs provide a secure connection. This helps maintain good electricity flow, reducing energy waste and ensuring reliable performance across various batteries and equipment. This tubing offers excellent insulation, protecting connections from heat, moisture, and corrosion, thus extending the life of your battery setup.