The chainsaw "blades" are technically known as "guide bars". For chainsaw carving these bars have very small noses (typically around 25 mm diameter). This enables the artist to create detail in the carving that would be impossible with a standard guide bar. The chains that are used on these guide bars are normally modified by reducing the length of the teeth in order that they are able to cut efficiently at the tip of the bar. The reason for this modification is that all chains manufactured currently (circa 2007) are made to be used on standard guide bars only. These "carving bars" are manufactured by "Cannon", "GB", and by a companies in Japan supplying "Stihl" and others. The other very important advantage with these guide bars is that they do not "kickback" when using the tip. they are therefore very safe to use in comparison with standard guide bars.