Bearing Type: Ball Bearings Material Impeller & Frame : Plastic(UL 94V-0) Lead Wires : UL 1007 AWG #28 OR Equivalent Red Wire Positive(+) Black Wire Negative(-) Weight : 14.5g (0.51 OZ) Rib Type Only EFB0405MA VDC 5 AMP 0.10 Watt 0.50 R.P.M. 5000 m³/min 0.167 CFM 5.90 mmHQ 2.24 IN HQ 0.088 dB-A 24.5