So my husband broke mine after using it for many years so as a die hard fan of Amazon car parts I didn't hesitate to buy it. Unfortunately I was disappointed. The day I received it we tested it on the old and checked on the nuts. It was a glass slipper with slotted bases. Fits perfectly. My hubs wanted to use it and came with a bang in less than 2 minutes and were afraid to tell me. Thank goodness it's only $6. We ended up going to the auto zone and bought the same thing for a lot of money and it still works. Don't buy that, go to the parts store, they're only $3 more expensive and better quality.