Hoya 40.5mm EVO Antistatic Protector Filter Rokinon Xeen T2.2 or 11 inch NexStar optical

or 11 inch NexStar optical tube assembly

Weaver Top Mount Base - #12 (Gloss Black)

Slip-resistant rubber armored body

It works with all the popular XBee module types

Hoya 40.5mm EVO Antistatic Protector Filter Rokinon Xeen T2.2 or 11 inch NexStar opticalClear Filter for Protection of Lens 16 Layer Super Multi Coating EVO Antistatic Coating Repels Dust Water, Stain, and Scratch Resistant Optical Glass Construction One Piece Low Profile Filter Ring Front Threads for Filter Stacking The Hoya 40. 5mm EVO Antistatic Protector Filter is a simple, clear filter designed for general protection for your lens. This optically clear filter does not affect the overall image quality while helping reduce dust,