L
Large (3.0 mm) Training Collar Dog Training Collar for Medium to Large Dog Breeds Much easier to put on and take off and not so aggressive it causes neck irritation.
The 6-Pack of 2nd Generation Small (2.2mm) KINDer Collar Links
R
Small (2.2 mm) Training Collar Dog Training Collar for Small to Medium Dog Breeds Small (2.2 mm) Training Collar Dog Training Collar for Small to Medium Dog Breeds