Difference between a slk and clk fog lamp (AMG)

[Mercizzy]

Hi would anybody be able to tell me if there is any physical difference between the slk fog lamp:

Mercedes SLK R171 AMG NEW FOG SPOTLAMP LAMP Light 06-08 | eBay



and the clk fog lamp:

Mercedes R-Class CL-Class C-Class CLK & More - Hella Drivers Side Fog Lamp Light | eBay


Thanks