Our 4 foot traffic lead is made from 5/8th Mill Spec static rope for no stretch and ultimate strength. It's size is larger then the rest and feels great in the hand. It also has some weight to it for greater response between you and your K9. The rope is connected using rope clamps which are then machine screwed together with 4 screws for unbelievable strength and a life long commitment. Once crimped and screwed we protect the fittings with heavy duty heat shrink. Our black anodized trigger snap has a load rating of 500lbs and is traditionally quick and easy to use. For the ultimate finish we added a metal O-ring on the trunk of the lead to allow the ability to make a slip lead for your K9. Also included is an o-ring in the handle for easy connection to our TACH1 hands free device. This dog leash will last you a lifetime!