CelticBird 0.965Inch Telescope Accessory Kit This six-piece 0.965inch astronomy accessory kit let you get the most out and enhances the performance of your telescope. Note: Please make sure that your telescope use 0.965" telescope accessories(The Outer Diameter is eyepiece end tube is 0.965"). Some telescopes use 1.25" accessories and 2" accessories too. 1 x 4mm eyepieces 1 x 6mm eyepieces 1 x 12.5mm eyepieces 1 x 20mm eyepieces 1 x Barlow lens eyepieces 1 x 90 degree diagonal