If one speaks of saw chains, then an endless chain with corresponding cutting contour is to be understood as part of a chain saw. This serves to remove the excess material when machining a material and is available in various lengths. The saw chains themselves are also found in chain cutters. The chain has the sections cutter, link and drive link. These are firmly riveted together. The individual sections of such an endless chain have different functions. The drive link ensures that the driving force of the chain saw is transferred to the chain. It should be noted here which drive link strength is used. For solid material, the drive link strength should have a higher resistance factor. Available link strengths are: 1.1 mm, 1.3 mm, 1.5 mm, 1.6 mm and 2.0 mm. With the teeth one differentiates half chisel and full chisel. Half chisels with rounded side edges are more likely to be found on low-power chain saws, whereas full chisels are reserved for strong saws due to their larger cutting width. Since the removal of material is less at semi-chisels, they have a significantly lower recoil effect. Decisive for the cutting behavior of the saw is also the shape of the cutting element. While the cutting member is responsible for the machining of the material this is combined with the driving member through the connecting member. Since saw chains are manufactured in a wide variety of variations, one should pay attention to the chain pitch and width and length. The chain pitch describes the distance between the rivet pins in the connecting link from center to center. In order to determine the chain pitch, the distance of 3 consecutive rivets must be measured. This then divided by two gives the output value. The dimension of the chain width is equal to the chain thickness of the drive link. There are different lengths of endless chains. For example, 52TG describes a chain with 52 drive links. The endless chain finds its use in the chain saw among other things in the sculpture. It is also used for harvesting and tree care. Other uses include sawmills, as a so-called cutting tool in a chop saw, in the stone processing or within quarries to cut stone blocks into smaller or saw large blocks from the rock. Special form of the endless chain is among other things the special chain, which is used with smaller American chain saws (eg McCulloch or Poulan). It has a different incisor and is sharpened without disassembly by a fixed and manually operated sanding block in the saw. Also rare to find is the stone saw chain. This has so-called double-cone cutting body, which are each connected to a steel cable. individual cutting bodies are separable, so that the chain can be shortened arbitrarily and individually. The chain is threaded around the block to be sawn or through a hole. During the sawing process, it is essential that the cut is cooled with water in order to simultaneously rinse the removed stone from the cut.