This is the improved version of the Magloc lead to collar product that was shown on Dragons Den, it now has a strong plastic connector to make it lighter, stronger and easier to fit, we have four dogs and use these on all of them, three have a harness fitted for walkies and one a collar as she gets sore underneath and this product makes it a doddle to attach four dogs to their leads in a hurry, I cannot imagine being without them. These MAGLOCS are espescially useful if you have problems with your hands and find the usual trigger clips hard to use, all you have to do is offer the part attached to the lead to the part on the collar or harness and it locks into place, to undo just press the sides of the lead attachment and it disengages. WE HAVE THESE IN BLACK, BLUE AND RED We also now stock the hay bag hanger to make hanging your horses hay bag one handed.