The present invention relates to an improved lug wrench. The adjustable pad set includes a plurality of internal pads of various thicknesses. The integrated circuit may be flip-chip bonded to the multi-layer package. The invention also provides compositions effective in carrying out the 1,4-hydride addition of \u03b1,\u03b2-unsaturated carbonyl compounds. At least one of the upper and lower press-rollers and the flattening roller is selected so as to allow it to operate.