Lupine's Underground Containment Collars have two adjustment points to keep the receiver centered on the dog's neck. These collars do not have a D-ring and are not intended for leash-walking. Our Underground Containment Collars are compatible with Invisible Fence Brand®, Pet Stop®, Pet Safe® and Dog Guard® receivers. Lupine does not provide any sales or service for the systems. The Lupine Invisible Fence Brand® Collar features three heat sealed holes that provide an exceptional fit for not only Invisible Fence Brand® Microlite and R-22 receivers but also Pet Stop®, Pet Safe® and Dog Guard® receivers as well. Hole Spacing: 1.2" (Microlite) 1.625" (R-22) Hole Diameter: .315" (Microlite) .33" (R-22).

The 3 hole multi-fit collar WILL NOT fit a Dog Watch receiver.