Snips and shears are used for cutting metal. Various types of snips and shears are used for different metals and thicknesses. Certain types of snips and shears are recommended for aviation metalworking. In tinner's snips this means the handles are extra long. Circle pattern snips have a curved blade and are used to cut circles. There are three cutting styles for compound-action snips&colon; straight cutting, left cutting, and right cutting. Some snips have replaceable blades for when the blade becomes worn out. For cutting through tougher materials, such as inconel and titanium, "special hard" snips are available. These snips are commonly used on vinyl or aluminium siding. Fein developed the first tin snips and the first jigsaw in 1927. These strips were later published in the compilation book called "Snips, Snails and Dragon Tales". Dignan also draws a cartoon using Larkin's name portraying Snips as a juvenile delinquent. These versions were recorded November 1978 at RAK Studios, produced by Snips. The following types of snips are available in different configurations.