<B>This item is only a sprocket for our brush DC motor MY1020. </B><BR> <B>100% Brand new and reliable quality</B><BR> <B>Used for brushed Motor MY1020<BR> <B>Name: </B>11 tooth sprocket. <BR> <B>Chain: </B>Used for T8F chain<BR> <B>Color: </B>Black<BR> <B>Material: </B>Alloy material<BR> <B>Inner diameter: </B> 8.5mm-10mm (width 8.5mm,inner diameter 10mm) <BR> <B>Outer diameter: </B> 31.5mm<BR> <B>Thickness: </B>4mm<BR> Fitment: The sprocket is used for brushed motor MY1020<BR>