[6207]107FL CR (Carbon Fiber Tube + Rack & Pinion Focuser ) Set Part # 6207 Description 107FL CR (Carbon Fiber Tube + Rack & Pinion Focuser ) Set Aperture 107mm Fluorite Focal length 600mm F-ratio 5.6 Lens configuration 2 elements in 2 groups Coating Fully multi-coated Physical length 500mm Tube diameter 80mm Weight 3.7kg (2.8kg OTA only) Filter 82mm (front cap) Parts included 2107, 7120, 7026, 7801, 9850, 7508, 7522, 7317, 7779, 8909, 8920, 2x7085, 2x7020, 3200, 3125, 0610 & 0630 Notes 8909 & 8920 are 9mm and 20mm eyepieces.