套筒/手工具 Sizes: *3-pc 1/4” extension bars 50, 100, 225mm (2”, 4”, 9”) *3-pc 3/8” extension bars 75, 150, 225mm ( 3”, 6”, 9”) *3-pc 1/2” extension bars 50, 125, 250mm ( 2”, 5”, 10”) Packing: Q’ty: 20 sets; N.W.: 21kgs; G.W.: 22kgs; 0.9 cu.ft.