Specifications:

[regular] SS755-500 need to be fixed

[regular] SS753-600 need to be fixed

[regular] SS752-800 need to be fixed

[regular] SS751-1000 need to be fixed

[regular] SS754-1200 need to be fixed

[Medium] SS755-500 free fixed cover

[Medium] SS753-600 free fixed cover

[Medium] SS752-800 free fixed cover

[Medium] SS751-1000 free fixed cover

[Medium] SS754-1200 free fixed cover

[high with] SS755-500 free fixed cover speed timing

[high with] SS753-600 free fixed cover speed timing

[high with] SS752-800 free fixed cover speed timing

[high with] SS751-1000 free fixed cover speed timing

[high with] SS754-1200 free fixed cover speed timing