This is a 10" long [254mm] black colored battery cable
Get rid of that crappy woven 30 year old cable-like thing on your bike! I strongly encourage you to install one of these insulated cables with heat shrink protection on both ends to your battery, and on the end that bolts to your frame, put a star washer between the terminal and your frame. Your charging system will thank you.
6 gauge multi strand copper wire with 1/4" eyelets on each end.