HYLYUN 5 Pcs Dog Collar Clips, Reflective Nylon Dog Collar Leash Adjustable Prong Collar Backup Clips Double Ended Backup Clasp Leash Connector for Dog Harness to Collar Safety Clip : Amazon.co.uk: Pet
Safety Cord / Attachment Strap - Bold Lead Designs
Walking Your Dog on a Prong Collar – Canine Life Skills
Paws and Obey Dog Training - I often get asked about the proper set up for prong/ecollar/leash and so here is a picture to help make it a little easier to understand.
Back That Collar Up — Canine Cohen Dog Training
Dog Collar Safety Leash Prong Collar Back up Strap Clip - Etsy UK