10 gauge - 12 feet. 250 amp clamps. Fully insulated clamp. Quality rubber insulation - flexible at -50 degrees F. Perfect for front to front hook-up. (See inside of packaging for instructions). Limited Warranty - This product is warranted to be free of manufacturing defects. Simply return to HBC Home & Hardware Products and we will replace it. This warranty gives you specific legal rights, and you may also have other rights, which vary from state province to state/province. Made in China.