More from Amazon.com : http://www.amazon.com/gp/product/B005G4HT6I?tag=purrfectcatdi-20

Celestron 93529 X-Cel LX 1.25-Inch 2x Barlow Lens (Black)

Quality X-Cel Lx 2X Barlow Doubles The Magnification Of Any 125 Eyepiece
3-Element Apochromatic Fully Multi-Coated Optics Offer Up Bright Sharp Images
A rubber grip helps to avoid accidental drops
Barrel is threaded to accept standard 125 filters
A brass compression ring holds the eyepiece firmly in place