You are buying TRC-50-1 

The cable is rated for 1kVRMS or 2kV DC. 

I cut  these from master roll and provide about 5% extra cable length. 

You will get 3m or ~10 feet. 

if you order multiples you will receive 1 long cable you can cut to your liking. 

Example -  your order 4 x 3m  = 12 m  you will get 1 piece that is 12m long.  

Thanks for looking.