Agena End Cap: ID = 1.96" (49.8mm), Plastic, Black

Agena offers what is arguably the largest selection of after-market end caps and dust plugs in the astronomy industry. Available in dozens of sizes and in a choice of materials and colors, we just might have that hard-to-find end cap to replace the one you lost (or never had) for your eyepieces, binoculars, accessories, etc.

Black plastic cap. Sold individually.

Please note that the inside of this end cap has an imprint of "51.5." This refers to the dimension (D) of the cap (see definitions below) and not dimension (A) which is the usable inner diameter of the end cap and is a bit smaller than the marked size.