The William Optics 70 mm Extension tube for FLT telescopes is very useful if you use a CCD or need more draw tube extension but still expect flexure in your train. The William Optics 70 mm Extension tube is fully anodized, and compatible with other similar telescopes. To mount the William Optics 70 mm Extension Tube on the telescopes, simply remove the nosepiece adapter for the telescope and thread the extender in.

Features of William Optics 4" Extension Tube:

• Fully anodized
• Compatible with other similar telescopes
• Male & Female thread
• Accepts the TMB field flattener for FLT
• 3.5" connection on both ends