I ordered these bulbs but no operates. I did the test on two lamps I contacted Amazon and treated with concern CellDeal. I suggested an exchange. Very courteous, trying to fix the situation, but in the second shipment, ditto the bulbs were not working either. Therefore I asked for a refund I still waiting to this day. In this case I'll point me to Amazon to handle the reimbursement. Please do not buy !!!!!!!!!!!
