Our Origin Studio Plates feature a double grip design perfect for exercises without using the barbell. Plates can be purchased individually or in sets as shown below. The Origin Studio Barbell comes with Origin Studio Barbell Spring Collars. The Origin Studio Barbell Set is an excellent option both for strength training during PT and open gym as well as group fitness and studio weights classes. Dia. 30mm High-quality rubber Also available as full studio barbell set Available in the following weights: 10kg (purple), 5kg (red), 2,5kg (blue), 1,25kg (green) SPECIFICATION: Brand Origin Usage Home Use, Commercial Use Condition Brand New Warranty All Origin products are covered by a 12 month warranty from day of purchase. The warranty only covers manufacturing faults and defects. Wear and tear is not covered.