Complete Solution: 50pcs Non-Insulated butt connectors (AWG8) & 50pcs 3:1 heat shrink tubing (Red/Black,) for automotive, marine, DIY and Industrial Applications Your DIY Time-Saver: The non-insulated connectors kit are pre-matched with the appropriate length and size of heat shrink tubing, eliminating the cumbersome process of purchasing separate components Product Material: Crafted from premium-grade red copper with a uniform tin-plated coating, these non-insulated butt connectors provide exceptional corrosion and oxidation resistance Chamfering Design: Precision beveled entry ensures smooth wire insertion for effortless installation Strong Crimps: Heavy-duty seamless butt connector barrels ensures ultra-secure crimps, Wire stop at the terminal center visually confirms full wire seating and proper alignment, ensuring maximum crimping tightness