This is a package of two Fans for the Tekin RSX Electronic Speed Control. Installs on top of heat sink to cool and prolong motor life Two Fans with Wire Leads and Connectors (only one fan is installed on motor) Tekin TT3834 Fan Shroud with Hardware, TEKC3834 Length: 0.98" (25mm) Width: 0.98" (25mm) Height: 0.27" (7mm) DC Input: 5V Amps: 0.19 jxs 01/29/16 ir/jxs &