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.