Enhance your dog's training experience with the TITANIUM ENHANCED CONTACTS LARGE version featuring Titanium Flexi Fin contact points. The large version of the Titanium Enhanced Contacts is designed for larger dogs with neck sizes 17” and above. These contact points feature a comfort pad with two titanium flexi finned contact points. This design allows for stimulation to be more evenly distributed, promoting better contact and reactivity. Additionally, dogs with sensitive skin may benefit from the friendlier Titanium finish of the TITANIUM ENHANCED CONTACTS LARGE. The TITANIUM ENHANCED CONTACTS LARGE version works with most existing Dogtra units. Check your system's compatibility on the chart before purchasing this item. Disclaimer: The Dogtra PATHFINDER, PATHFINDER MINI and PATHFINDER TRX will not be able to accommodate the Titanium Enhanced Contacts. The Titanium Enhanced Contacts will not sit properly on these units due to the design. Purchase includes 1 TITANIUM ENHANCED CONTACT LARGE, 2 nuts, and 1 vertical wrench. Compatibility with other manufacturer e-Collars is not guaranteed.