Sprenger Spiked Training Collar XLarge 25"

• comfort-plus version for more convenient dog training
• quick release snap hook to quickly put the collar on and off without taking links apart
• swivel to prevent leash tangling
• dead-ring to back-up your prong collar
• center plate for balanced fit
• assembly chain for quick action
• fastener plates to increase the connection security
• you can customize the size by adding or removing links  
• 25 inches (63 cm) long
• will do for dogs with 23 inches (58 cm) neck size and weight up to 154 lbs (70 kg)
• collar’s weight depends on the number of links: 14 - 18 oz (397 - 505 g)