Noctua NF-S12B FLX 120 mm 3 Speed Setting Beveled Blade Tips Design SSO Bearing Fan SCD 2 - Retail Noctua NF-S12B FLX, 120mm, 3 Speed Setting, Beveled Blade Tips Design, SCD 2, SSO Bearing Fan_ Retail Spec.Type : Fan Fan Size : 120 x 120 x25mm Compatibility : CPU Cooler Features : Blade Design with Beveled Blade Tips. 3 speed Setting Advance Smooth Commutation Drive 2 system SSO Bearing