Safely connects your generator to your transfer switch or power inlet box * Made of thermoset weather resistant rubber * Includes male and female 4-wire 10-gauge twist-lock ends in nema configuration l14-30 * Compatible with generators equipped with 30-amp outlets including: gp3250, lp3250, xg4000, xp4000, gp5500 and much more * Comes with a 2-year limited warranty