A device may comprise a flexure formed of a first semiconductor material. The methods can include chemically adsorbing a plurality of first molecules on a surface of the porous layer in a chamber and forming a first layer of the first molecules on the surface of the porous layer. The top opening would include a drawstring for closing the bag, which is attached to the exterior of the bag to form a handle or shoulder strap. The vibration reducing member is disposed on an opposite side of a rectilinear working axis of the tool bit from the rotating shaft and connected to a connecting part between the swinging member and the tool driving mechanism so as to be driven. Either one or two slide-lock mechanism could be used with the level.