Observers Eyepiece and Filter Kit (1.25")The perfect compliment to NexStar SE series telescopes! This kit adds to the 25mm Plossl eyepiece included with your telescope to give you a nice range of eyepieces, plus a barlow and basic filters. The case even includes a space for the 25mm eyepiece that was bundled with the telescope. This Celestron eight piece accessory kit enhances the performance of your telescope Includes 6mm and 17mm Plossl eyepieces, a 2X Barlow lens that can be used visually