This pet leash do not need to connect to a extra collar, 2mm link is strong enough for professional training.

• 51" (170cm) length from nylon handle to the end of swivel hook. Handle Length: 7"
• Adjustable chain dog collar, measures 14-inch overal circumference length, also comes with a swivel hook
• Heavy Chain with 2mm wire width, suit for Small dogs.
• Strength and durability
• Red color nylon looped handle

51" (170cm) length from nylon handle to the end of swivel hook. Handle Length: 7"Cosmos