Cutting tools are provided that include a circular core with a cutting means located on its periphery, a central bore to receive an arbor of a rotating power tool and one or more perforations extending through the central core. and 1 atm total pressure to an area adjacent the space. A fluid management system is also disclosed utilizing the deconstructable storage tank. The disk drive operation is afforded by rotation of the disk at a steady rate that is prescribed by a command drawn from related processing block of the computer. Matching can be provided to identify one or more items in the picture to facilitate retrieval of information related to the items.