3mm wire gauge x 20in (50cm) length

• This ULTRA-PLUS Training prong collar is designed to offer even more precise correction, as well as pull limitation. 
• This unique prong collar features prongs of the same physical size as 2.25mm wire gauge but with the strength of a 3mm wire gauge.
• A classic prong-style dog collar for professional training purposes.
• Designed for use in dogs up to 88lbs.

Please note: the starting length of this collar will fit dog's with a neck measurement up to 18". If your dog's neck size is larger than this, you will need to purchase additional middle links to adjust the size.