iRobot Roomba Wheel -LEFT

I bought the wrong one and not able to return It is for LEFT wheel caster replacement of your iRobot Roomba I have 2 LEFT wheels. Buy one for $10, 2 for $15 It is compatible with the following:  500 Series =====. 510,530,532,535,550,560,562,564,570,571,572,577,580,581,587,590,& 599 600 Series =====. 610,611,612,614,615,616,618,620,621,625,627,630,631,632,639,650,651,652,653,654,655,660,665, 670,671,675,677,680,681,685,690,692,694,695 700 Series ===== 760,761,765,770,772,780,782,785,786,790  800 Series ===== 801,805,850,860,870,877,880,890,891,895,896 900 Series ===== 960,965,966,971,976,980,981,985 E Series ===== e5,e6,e7 I Series ===== i1,i2,i3,i4,i5,i6,i7,i8. and all the Plus Models.  J Series ===== j5,j6,j7,j8,j9 and all the Plus Models  but not the MOP ones