JJC LC-49 49mm Lens Cap for SONY Alpha A3000 DSLR Camera NEX Series (NEX-7 NEX-5N NEX-5R NEX-3N) Compact Cameras or Pentax 49MM Filter Thread Lens JJC LC Series Snap-On Lens Cap is a lens cap Protect the lens from impact, dirt, or dust. Snap-on Lens Cap Size?49mm