This is a 4 Pack of 2AWG Non Insulated Butt Connectors. These Connectors are  Seamless, Tin Plated and have a Chamfered Barrel for Ease of Wire Insertion.

Features:

• Wire gauge: 2 Gauge (4AWG)
• Maximum Voltage Rating: 600V
  
• Temperature Rating: 302°F (150°C)
  
• Electro Tin Plated
• Manufactured from Electrolytic Copper Seamless Tube.
• Ease of Wire Insertion with Chamfered Barrel
• Wire stop for Wire Positioning Built on the Middle of the Butt Connectors