A hammer is one hand tool that deserves a place in any tool set, and although the delicate world of electronics may appear to have little use for such a decidedly blunt instrument, there are countless occasions when a hammer is needed. Electricians, of course, regularly need to use items such as cold chisels and also frequently encounter unwanted nails and screws. Hammers tend to be classified by weight and type, the most brutal being the club hammer, which is useful where brute force is required. The engineer's hammer is also far from a precision instrument, having one chisel face. The Warrington hammer is a traditional style for general purpose use, whereas the claw hammer can be rather clumsy to use. Cold chisels range in size from the very small to the large bolster chisels. Soft-faced hammers and mallets prevent damage and some have 'no recoil' properties. Punches have many uses, with centre punches being useful for marking a point for a hole to be drilled. Pin and nail punches allow fixings to be hammered into place while keeping the hammer at a safe distance, and letter and number punches enable identification marks, such as serial numbers, to be added.