Black 3ft Long 4 AWG Marine Battery Cable with 5/16" and 3/8" Stud Copper Tinned Lugs 4 AWG ToughFlex ultra flexible wire Heat resistant up to 105C dry Cable with 5/16 inch stud lug on one end and 3/8 inch stud lug on another end Heatshrink on both ends UL list. Meets ASTM B-172 standards. Oil and Flame resistant