Purchase one connector per dog (for example: if you want to walk 3 dogs on one leash, purchase 3 connectors) *Purchase of 2/more connectors automatically comes with one o-ring **Please note these are 100% upcycled cotton, therefore pilling is natural and will occur. To be purchased with the multi-dog leash or 6-in-1 leash. Have more than one dog at home? No Problem! Use these connectors with the 6-in-1 Leash and walk multiple pups at the same time! Parker & Co. Cotton Rope Multi-Dog Leashes are extra soft, long-lasting, and handcrafted in Canada using 100% natural three-strand cotton rope. Each leash is individually hand-spliced and whipped for additional strength and durability. The rope is soft on the hands and extremely strong, with just the right amount of "give" to help absorb a sudden jerk or pull.