A dumbbell has three components: the end height of the ends, the diameter of the Bar, and the length of the Bar. Each of these components is sized to assure a proper fit for retrieving.
End Height. This is the height of the two ends of the dumbbell. The bar is fitted in the center of the end and determines how much space the dog’s lower jaw will have to slide in between the floor and the bottom of the bar. If the ends are not high enough, the dog will likely have trouble picking it up, and may likely pick it up from the top, or have trouble picking it up. If the end is too high, the dumbbell may be too heavy; the ends may block the dog’s vision, and may have trouble picking it up. End heights are available in quarter inch increments from 1-3/4 to 3-3-3/4 inches.
Bar Diameter. This is the height of the bar from the bottom to the top. If the diameter is too small or too large, the dog will likely roll it around in its mouth trying to find a comfortable place to hold it. Our bars are knurled to provide a solid fit and grip which discourages mouthing. Bars are available in diameters of 3/8, 1/2, 5/8, and 3/4 of an inch.
Bar length. This is the most important as far as correct fit. If it is too short the dog cannot pick it up properly, and if it is too long, the dog likely will carry it crooked and may possibly drop it. Bar lengths are available in quarter inch increments from 1-3/4 to 3-3/4 inches.