Worth a few dollars more for quality over cheaper alternatives. I think this is the factory OEM for many 3 series projectors. They went to my 2006 non-sport chassis 325i. Supplied with replacement bottom fittings (single nut) but without top fittings (nut with compressible sleeve attached). Doesn't come with cases either. Pay attention to this when buying. Excellent shelves. Made an immediate difference. The hardest part was removing the trunk carpet to get to the top of the A-pillars.