This is the aluminum lens cap that was included with the . It also comes new with the  It will fit the following Leica M lenses, without the hood attached and with the attached:

• Leica Super-Elmar-M 21mm f/3.4 ASPH
• Leica Elmar-M 24mm f/3.8 ASPH
• Leica Summilux-M 35mm f/1.4 ASPH FLE
• Leica APO-Summicron-M 35mm f/2 ASPH (also fits with hood)

A far nicer cap than the regular  and embossed with the Leica script logo, this cap is felt lined to ensure it does not scratch the lens' finish.

Weight: 14 grams

Outer Diameter: 53mm

Outer Depth: 11mm

Inner Diameter: 50.5mm 

Inner Depth: 8mm