[Gallery link = "file" columns = "2" size = "Medium" ids = "50325, 50326, 50330, 50332, 50333, 50334,50335"] The special Circles service rides are aesthetically similar and have the same weight of the most common GP4 compared to which changes the type of anodization, tougher on the SSC the first SSC were the model Bleu SSC, born in 72 and initially reserved for professionals only V Erso the 75 are marketed to the public. Grey SSC (Hard anodizing treatment, the first circle to have it) is reserved for professionals up to 79. They often report the team sticker and the name of the "Ray". The SSC rims thanks to their resistance and to the width of the circle of almost 22mm allowed the use of wider coverings, for this they were also used in the races more difficult from a point of view of stress of the circle (for this they were often Called Paris Roubaix) the series Gold 10 for pro teams have stickers with black and more squared writings than the white writings of the blue version and do not have the SSC adhesive small gold color. The Or 10 are narrower by more than 20.5 mm compared to SSC 21.70. There is also a very interesting version of SSC, the MA50 SSC for tyres only seen in 32/36 holes. It was a circle developed for races on pave very resistant. Outputs in 1982 were the first wheels with tyres used at the Tour de France by Hinault in 82. Very rare.