Reducers & AdaptersContents: 1-PCS 3/8" Dr. Universal Joint 2-PCS Reducers: 3/8"Fx 1/4"M & 1/2"Fx 3/8"M 2-PCAdapters: 1/4"Fx 3/8"M & 3/8"Fx 1/2"M Packing :Q’TY:72 N.W: 18 kgs G.W: 19 kgs 0.78cu.ft