Heavy - Adjusts to 24" high. Up to 50 lb. dog. PREVENT YOUR DOG FROM SITTING WHILE GROOMING! This is a steel arm that clamps to your grooming table. There is a rod that slides up and down on the steel arm and extends across the table. It is positioned under the dog’s belly, just in front of the rear legs, from either the side, or from the rear, to help keep your dog standing while you’re grooming.