Keep your Pentax M 50mm f1.4 - f1.7 - f2 lens free from dust, scratches and other damages with this snap-on front lens cap. Designed to fit a 50mm lens, this unbranded/generic cap features snap-clips, ensuring that it stays securely in place. Weighing only 4 grams, it won't add any significant weight to your camera setup. This lens cap is a must-have accessory for any photographer looking to protect their optics. Perfect for use with lenses of the same fitting, such as those in the Pentax M range.
Cant believe that I have to actually clarify this, but apparently not everyone understands, the mm number in the title is NOT the size of the cap, it is the focal length of the lens, which this cap is a replacement for...
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