Length Before Expansion: 315 mm / 12.4 inch; Length After Expansion: 520 mm / 20.47 inch; Overall Size: 36 x 32 x 23 mm / 1.42 x 1.26 x 0.91 inch (OD*ID*W); Color: Black Advantage: It is made of durable plastic material, which is not easy to bend, light…