The Case for NexStar 8/9.25/11" Optical Tube from Celestron is a hard shell exterior case with dense interior padding to safely transport an 8, 9.25, or 11 inch NexStar optical tube assembly. This case features an extendable handle, durable wheels, and zippered accessory pouch. Also included are two dense foam spacers and a built-in compression strap for customizing the fit of the case to each telescope model.