The Jumper Cables are manufactured by Mechanics Ville Ltd. in Canada. They are heavy-duty 6 Gauge cables with a length of 16ft and a peak amp rating of 250. The set includes a carrying case for convenience. These Spark Free Booster Cables are designed for automotive use and come as a single unit without warranty. Worry free jump starting that's safer and easier than competing products Perfect for people with little to no experience jump starting their vehicle Safely hold clamps in one hand even while connected to a live battery Protective PVC barrier that protects you from exposed copper Our clamps fits top and side post batteries No worries about personal injuries or damage to your electrical system Durable 16 foot medium duty 6 gauge cables with travel case included Brand new condition; these are very high quality -- the best you'll ever buy!