10mm cord, double welded with welded steel ring and leather stopper.
Dog weight up to 40kg approx.
Great lead for the training kit, slip over the dogs neck and adjust the stopper to suit. 
Fit as you would a correction chain so make sure that you decide which side of you the dog will be walking on for maximum efficiency of use. If you have never used a slip before then book in with a trainer for a driving lesson.