Spider Box Twist-Lock Generator Power Extension Cord, 50 Amp, 125/250V, SOOW Cable Type, Gauge 6/4, Professional-Grade Outdoor California Standard Locking Extensions, 25' Long, Black

Bought this for connecting portable generator to matching 50-Amp socket on side of house, hard wired to back feed electrical panel with mechanical interlock with main breaker, to ensure that generator can never back feed utility grid. Worth every penny, very well made and heavy duty.

well made. worth the extra money