Specifications: Material: Aluminum alloy + ABS Color: Silver + Black; Type: 2.0 x 2.0 x 2.0 inches (50 x 50 x 50 mm) 21 x 75 mm 3 pcs / set options: Rolling part size: approx. 50 x 50 mm 10 x 50 mm 21 x 75 mm); Weight: approx. 3.0 oz (1 g) Package Contents: 1. Please allow 2cm discrepancy. Item color displayed in photos may be slightly different from actual objects because monitors are not calibrated and should be taken as standard