Part AA Adapter x Adapter Reducing Cam and Groove Couplings

1 x 1 in, 1-1/2 x 1-1/2 in, 1-1/2 x 2 in, 2 x 2 in, 2 x 2-1/2 in, 2 x 3 in, 2-1/2 x 2-1/2 in, 3 x 3 in, 3 x 4 in, 4 x 4 in, 4 x 6 in, 6 x 6 in