A reciprocating power tool includes a motor operatively connected with a drive assembly for driving a reciprocating shaft, on which a working tool is supported. The subject invention also includes transgenic cells and plants that produce these proteins. A third transparent region in 85-95 degree phase, constructed of a translucent layer, is formed on the border between the first transparent region and the second transparent region. The light-shielding layer is made of a material containing tantalum and nitrogen. The first tube is fluidly coupled to the first section and the second tube is fluidly coupled to the second section.