Check the listing for details. Perimeter Comfort Contacts Rubber Tips PFA-004 - 6 replacements in pack. Condition: New. Listed at 17.99 USD. STORE ABOUT US NEWSLETTER CONTACT US DESIGN & CONTENTS © COPYRIGHT PETMOODS Perimeter Technologies Perimeter Comfort Contacts Replacement Tips PFA-004 It’s one thing to make a product that keeps your pet safely contained in the yard, it’s another to thoughtfully design features that make it safer and more comfortable too. Perimeter’s exclusive Comfort Contact Rubber Tips cushion your pet’s neck with soft rubber, providing a lighter touch solution to hard steel contacts. Veterinarians prefer the softness of the Comfort Contacts to help avoid serious skin irritations. The special manufacturing process impregnates a conductive material with the rubber while maintaining the comfort of flexible contact points. This six pack refresh kit is used to replace the rubber tips on the comfort contacts for your current dog collar. It is important to replace these tips every 3-6 months or every time your collar battery is replaced, as they lose conductivity over time.