First Components, Headset 21.1 Diameter (21.1 x 30 x 27) FREE shipping within Australia over AU$199.00 In stock. Available via Click and Collect or Buy Online Share Loading Facebook Like button... First Components, Headset 21.1 Diameter (21.1 x 30 x 27) FREE shipping within Australia over AU$199.00 In stock. Available via Click and Collect or Buy Online Share Loading Facebook Like button...