Remeel Pet Supply Imports Chrome Plated Ultra-Plus Prong Training Collar with Quick Release Snap Deluxe adjustable prong collar is a safe and effective training solution 2.5mm Prong Chrome-plated collar provides maximum strength and durability Smooth and rounded prongs to prevent injury - safe alternative to choke collars Small: Fits up to 16" neck, for dogs 30 lbs and under By Remeel Pet Supply