Professional Snap On Lens Cap + Deluxe Lens Cap Keeper For The Pentax K2000, K200D, K20D, K10D, K100D, K100D SUPER, K110D, *ist DL2, *ist DS2, *ist DL, *ist DS Digital Cameras Which Have Any Of These (55-300mm, 75-300mm, 18-50mm, 28-80mm, 31mm) Pentax Lenses