Description: The crown cap can be fitted in place of many airbrush needle caps & offers several advantages Helps prevent needle cap paint build up Allows the needle tip to be more easily seen & accessed Shorter length allows closer fine detail work to be done The crown cap offers the advantage of having the needle cap removed, but also protects the needle tip. Specification: Material: Brass Size: Approx. 5 x 7 mm / 0.2 x 0.28 inch Package Includes: 1 Piece Airbrush Needle Cap