SportDOG 3/4in Collar Strap - Black - Replacement 3/4 inch collar straps for most SportDOG Brand training e-collars. Perfect for replacing old collar straps or differentiating each dog's collar. Simply remove the Collar Receiver from your dog's current collar and place it on the new strap. These straps do not feature a D-ring for leash attachment as leashes should not be attached to e-collars due to the uncomfortable pressure it causes from the probes on your dog’s neck. They do feature a metal strap keeper to help keep any excess strap flat against the collar.