Ametric&reg; 18L050.JA ANSI QD Timing Pulley 3/8 Inch Pitch for a L050 Timing Belt, 1EF Type, JA QD Bushed, 18 Teeth, 2.149 Pitch Dia, 2.119 OD, 2.4375 Flange Dia, 0.75 Face Width, 0.5 Bush Offset, 1 Bush Depth, (1-074)