1) 1/2 x 1/2 = 38mm Adaptor OD: 27mm Hex 2) 1/4 =24mm Adaptor OD: 19mm Hex 3) 3-Step Pins set with 35mm Hex Nut 4) 1/2 x 3/4 Adaptor Set with Hex Nut 30mm 5) 3/4 x 3/4 Adaptor Set with Hex Nut 30mm 6) 3/4 Male-Female small Adaptor with Hex Nut 30mm 7) 3/4