ALIGN PILATES PRO HALF CADILLAC, BRACKET - C SERIES, Pro Half Cadillac bracket set is for use in conjunction with the Align-Pilates C*-Pro reformers, which includes the C1-Pro and C2-Pro, as well as the wood effect versions of these reformers. This bracket set simply attaches to the reformer leg extensions, and then the Half Cadillac can be added into position.