2.5 inch diameter velcro catch balls, weight: 58gram/pc. 1.75 inch diameter velcro catch balls, weight: 28gram/pc. 2.5inch diameter tennis balls, weight: 58gram/pc and 70gram/pc(two options for customer). 1.75inch diameter tennis ball, weight: 28gram/pc. any color balls can production. any logo can accpet.