Du-Bro Micro Sport Wheels 3" \(76.2mm\) Part No: 300MS. These open spoke wheels will add a sporty look to your model. They have been designed with electric models in mind. These also have many more applications in school projects and various crafts. Wheel Dia. = 3.00" \(79.4mm\) / Axle Dia. = .078" \(2.0mm\) / Weight = 11 grams/ea