Review on 30 Ft GearIT Extension Cord With 4-Prong 250-Volt Connection For RV And EV, Compatible With Tesla Model 3/S/X/Y - NEMA 14-50P To 14-50R, 6/3, 8/1 STW AWG Gauge Outdoor Auto Power Cord by Jeff Hill

I use this to extend my mobile charger comes with my Tesla M3. Since I installed the NEMA14-50 outlet in a bad place. When we purchased another Model Y, the cable of the mobile charger cannot reach both vehicle. The extension cable is here to rescue. I found this is probably the cheapest one available in all the sites I searched. It's made of good quality material, very thick while still flexible. The mobile charger can charge at 32A, and the cable remains cool. Someone might prefer black color, but green color stands out in my messy garage. not sure if it's easier to get dirty.