These 3-hole heavy-duty, 3/4" wide, vinyl straps are a suitable heavy duty replacement strap to fit a number of bark collars or fencing collars (view below). The collar length is suitable for dogs from as small as 5kg to neck sizes up to 68cm. You can also join straps together to increase the collar size for larger dogs. We recommend this collar strap for working dogs and dogs that wander through bushes or other rough terrains.